Home / 1,252.20-1,877.48-666.83

Finding the Fourth Proportional to 1,252.20, 1,877.48 and 666.83

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Solution

The fourth proportional to 1,252.20, 1,877.48 and 666.83 is: 999.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.20 : 1,877.48 = 666.83 : x
  2. Step 2: Convert to fraction form
    1,252.20/1,877.48 = 666.83/x
  3. Step 3: Cross multiply
    1,252.20x = 1,877.48 × 666.83
  4. Step 4: Simplify right side
    1,252.20x = 1,251,947.27
  5. Step 5: Solve for x
    x = 1,251,947.27/1,252.20
  6. Step 6: Final answer
    x = 999.80

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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.