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Finding the Fourth Proportional to 1,257.52, 1,886.80 and 1,000.24

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Solution

The fourth proportional to 1,257.52, 1,886.80 and 1,000.24 is: 1,500.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.52 : 1,886.80 = 1,000.24 : x
  2. Step 2: Convert to fraction form
    1,257.52/1,886.80 = 1,000.24/x
  3. Step 3: Cross multiply
    1,257.52x = 1,886.80 × 1,000.24
  4. Step 4: Simplify right side
    1,257.52x = 1,887,252.83
  5. Step 5: Solve for x
    x = 1,887,252.83/1,257.52
  6. Step 6: Final answer
    x = 1,500.77

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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.