Home / 1,261.11-1,890.27-951.96

Finding the Fourth Proportional to 1,261.11, 1,890.27 and 951.96

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Solution

The fourth proportional to 1,261.11, 1,890.27 and 951.96 is: 1,426.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.11 : 1,890.27 = 951.96 : x
  2. Step 2: Convert to fraction form
    1,261.11/1,890.27 = 951.96/x
  3. Step 3: Cross multiply
    1,261.11x = 1,890.27 × 951.96
  4. Step 4: Simplify right side
    1,261.11x = 1,799,468.52
  5. Step 5: Solve for x
    x = 1,799,468.52/1,261.11
  6. Step 6: Final answer
    x = 1,426.89

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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.