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Finding the Fourth Proportional to 6,487, 9,731.04 and 1,870

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Solution

The fourth proportional to 6,487, 9,731.04 and 1,870 is: 2,805.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487 : 9,731.04 = 1,870 : x
  2. Step 2: Convert to fraction form
    6,487/9,731.04 = 1,870/x
  3. Step 3: Cross multiply
    6,487x = 9,731.04 × 1,870
  4. Step 4: Simplify right side
    6,487x = 18,197,044.80
  5. Step 5: Solve for x
    x = 18,197,044.80/6,487
  6. Step 6: Final answer
    x = 2,805.16

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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.