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Finding the Fourth Proportional to 6,240.86, 8,612.40 and 3,408.26

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Solution

The fourth proportional to 6,240.86, 8,612.40 and 3,408.26 is: 4,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240.86 : 8,612.40 = 3,408.26 : x
  2. Step 2: Convert to fraction form
    6,240.86/8,612.40 = 3,408.26/x
  3. Step 3: Cross multiply
    6,240.86x = 8,612.40 × 3,408.26
  4. Step 4: Simplify right side
    6,240.86x = 29,353,255.36
  5. Step 5: Solve for x
    x = 29,353,255.36/6,240.86
  6. Step 6: Final answer
    x = 4,703.40

Related Problems

Find fourth proportional to 3,120.43, 4,306.20 and 1,704.13
Half scale
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Double scale
Find fourth proportional to 6,241.86, 8,613.78 and 3,409.26
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.