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Finding the Fourth Proportional to 4,687.81, 6,470.81 and 2,699.16

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Solution

The fourth proportional to 4,687.81, 6,470.81 and 2,699.16 is: 3,725.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.81 : 6,470.81 = 2,699.16 : x
  2. Step 2: Convert to fraction form
    4,687.81/6,470.81 = 2,699.16/x
  3. Step 3: Cross multiply
    4,687.81x = 6,470.81 × 2,699.16
  4. Step 4: Simplify right side
    4,687.81x = 17,465,748.15
  5. Step 5: Solve for x
    x = 17,465,748.15/4,687.81
  6. Step 6: Final answer
    x = 3,725.78

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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.