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Finding the Fourth Proportional to 4,689.38, 6,471.95 and 2,699.61

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Solution

The fourth proportional to 4,689.38, 6,471.95 and 2,699.61 is: 3,725.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.38 : 6,471.95 = 2,699.61 : x
  2. Step 2: Convert to fraction form
    4,689.38/6,471.95 = 2,699.61/x
  3. Step 3: Cross multiply
    4,689.38x = 6,471.95 × 2,699.61
  4. Step 4: Simplify right side
    4,689.38x = 17,471,727.44
  5. Step 5: Solve for x
    x = 17,471,727.44/4,689.38
  6. Step 6: Final answer
    x = 3,725.81

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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.