Home / 8,434.20-11,649.53-6,319.19

Finding the Fourth Proportional to 8,434.20, 11,649.53 and 6,319.19

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Solution

The fourth proportional to 8,434.20, 11,649.53 and 6,319.19 is: 8,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,434.20 : 11,649.53 = 6,319.19 : x
  2. Step 2: Convert to fraction form
    8,434.20/11,649.53 = 6,319.19/x
  3. Step 3: Cross multiply
    8,434.20x = 11,649.53 × 6,319.19
  4. Step 4: Simplify right side
    8,434.20x = 73,615,593.48
  5. Step 5: Solve for x
    x = 73,615,593.48/8,434.20
  6. Step 6: Final answer
    x = 8,728.22

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Half scale
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Double scale
Find fourth proportional to 8,435.20, 11,650.91 and 6,320.19
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.