Home / 5,915.20-8,164.68-4,147.24

Finding the Fourth Proportional to 5,915.20, 8,164.68 and 4,147.24

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Solution

The fourth proportional to 5,915.20, 8,164.68 and 4,147.24 is: 5,724.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.20 : 8,164.68 = 4,147.24 : x
  2. Step 2: Convert to fraction form
    5,915.20/8,164.68 = 4,147.24/x
  3. Step 3: Cross multiply
    5,915.20x = 8,164.68 × 4,147.24
  4. Step 4: Simplify right side
    5,915.20x = 33,860,887.48
  5. Step 5: Solve for x
    x = 33,860,887.48/5,915.20
  6. Step 6: Final answer
    x = 5,724.39

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Double scale
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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.