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Finding the Fourth Proportional to 6,620.92, 9,931.36 and 4,157.47

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Solution

The fourth proportional to 6,620.92, 9,931.36 and 4,157.47 is: 6,236.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.92 : 9,931.36 = 4,157.47 : x
  2. Step 2: Convert to fraction form
    6,620.92/9,931.36 = 4,157.47/x
  3. Step 3: Cross multiply
    6,620.92x = 9,931.36 × 4,157.47
  4. Step 4: Simplify right side
    6,620.92x = 41,289,331.26
  5. Step 5: Solve for x
    x = 41,289,331.26/6,620.92
  6. Step 6: Final answer
    x = 6,236.19

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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.