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Finding the Fourth Proportional to 1,583.80, 2,375.94 and 761.92

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Solution

The fourth proportional to 1,583.80, 2,375.94 and 761.92 is: 1,143.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,583.80 : 2,375.94 = 761.92 : x
  2. Step 2: Convert to fraction form
    1,583.80/2,375.94 = 761.92/x
  3. Step 3: Cross multiply
    1,583.80x = 2,375.94 × 761.92
  4. Step 4: Simplify right side
    1,583.80x = 1,810,276.20
  5. Step 5: Solve for x
    x = 1,810,276.20/1,583.80
  6. Step 6: Final answer
    x = 1,143.00

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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.