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Finding the Fourth Proportional to 4,287.39, 6,431.10 and 1,655.70

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Solution

The fourth proportional to 4,287.39, 6,431.10 and 1,655.70 is: 2,483.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.39 : 6,431.10 = 1,655.70 : x
  2. Step 2: Convert to fraction form
    4,287.39/6,431.10 = 1,655.70/x
  3. Step 3: Cross multiply
    4,287.39x = 6,431.10 × 1,655.70
  4. Step 4: Simplify right side
    4,287.39x = 10,647,972.27
  5. Step 5: Solve for x
    x = 10,647,972.27/4,287.39
  6. Step 6: Final answer
    x = 2,483.56

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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.