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Finding the Fourth Proportional to 6,617.93, 9,929.47 and 2,917.55

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Solution

The fourth proportional to 6,617.93, 9,929.47 and 2,917.55 is: 4,377.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,617.93 : 9,929.47 = 2,917.55 : x
  2. Step 2: Convert to fraction form
    6,617.93/9,929.47 = 2,917.55/x
  3. Step 3: Cross multiply
    6,617.93x = 9,929.47 × 2,917.55
  4. Step 4: Simplify right side
    6,617.93x = 28,969,725.20
  5. Step 5: Solve for x
    x = 28,969,725.20/6,617.93
  6. Step 6: Final answer
    x = 4,377.46

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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.