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Finding the Fourth Proportional to 1,555.61, 2,147.19 and 1,024.88

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Solution

The fourth proportional to 1,555.61, 2,147.19 and 1,024.88 is: 1,414.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.61 : 2,147.19 = 1,024.88 : x
  2. Step 2: Convert to fraction form
    1,555.61/2,147.19 = 1,024.88/x
  3. Step 3: Cross multiply
    1,555.61x = 2,147.19 × 1,024.88
  4. Step 4: Simplify right side
    1,555.61x = 2,200,617.46
  5. Step 5: Solve for x
    x = 2,200,617.46/1,555.61
  6. Step 6: Final answer
    x = 1,414.63

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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.