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Finding the Fourth Proportional to 8,393.96, 12,582.74 and 4,221.45

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Solution

The fourth proportional to 8,393.96, 12,582.74 and 4,221.45 is: 6,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.96 : 12,582.74 = 4,221.45 : x
  2. Step 2: Convert to fraction form
    8,393.96/12,582.74 = 4,221.45/x
  3. Step 3: Cross multiply
    8,393.96x = 12,582.74 × 4,221.45
  4. Step 4: Simplify right side
    8,393.96x = 53,117,418.33
  5. Step 5: Solve for x
    x = 53,117,418.33/8,393.96
  6. Step 6: Final answer
    x = 6,328.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.