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Finding the Fourth Proportional to 1,669.80, 2,501.88 and 743.94

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Solution

The fourth proportional to 1,669.80, 2,501.88 and 743.94 is: 1,114.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.80 : 2,501.88 = 743.94 : x
  2. Step 2: Convert to fraction form
    1,669.80/2,501.88 = 743.94/x
  3. Step 3: Cross multiply
    1,669.80x = 2,501.88 × 743.94
  4. Step 4: Simplify right side
    1,669.80x = 1,861,248.61
  5. Step 5: Solve for x
    x = 1,861,248.61/1,669.80
  6. Step 6: Final answer
    x = 1,114.65

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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.