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Finding the Fourth Proportional to 5,616.47, 8,425.13 and 1,721.00

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Solution

The fourth proportional to 5,616.47, 8,425.13 and 1,721.00 is: 2,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.47 : 8,425.13 = 1,721.00 : x
  2. Step 2: Convert to fraction form
    5,616.47/8,425.13 = 1,721.00/x
  3. Step 3: Cross multiply
    5,616.47x = 8,425.13 × 1,721.00
  4. Step 4: Simplify right side
    5,616.47x = 14,499,598.00
  5. Step 5: Solve for x
    x = 14,499,598.00/5,616.47
  6. Step 6: Final answer
    x = 2,581.62

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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.