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Finding the Fourth Proportional to 6,615.83, 9,925.92 and 2,921.15

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Solution

The fourth proportional to 6,615.83, 9,925.92 and 2,921.15 is: 4,382.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.83 : 9,925.92 = 2,921.15 : x
  2. Step 2: Convert to fraction form
    6,615.83/9,925.92 = 2,921.15/x
  3. Step 3: Cross multiply
    6,615.83x = 9,925.92 × 2,921.15
  4. Step 4: Simplify right side
    6,615.83x = 28,995,126.02
  5. Step 5: Solve for x
    x = 28,995,126.02/6,615.83
  6. Step 6: Final answer
    x = 4,382.69

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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.