Home / 1,248.17-1,871.60-517.95

Finding the Fourth Proportional to 1,248.17, 1,871.60 and 517.95

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Solution

The fourth proportional to 1,248.17, 1,871.60 and 517.95 is: 776.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.17 : 1,871.60 = 517.95 : x
  2. Step 2: Convert to fraction form
    1,248.17/1,871.60 = 517.95/x
  3. Step 3: Cross multiply
    1,248.17x = 1,871.60 × 517.95
  4. Step 4: Simplify right side
    1,248.17x = 969,392.63
  5. Step 5: Solve for x
    x = 969,392.63/1,248.17
  6. Step 6: Final answer
    x = 776.65

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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.