Home / 3,151.20-4,726.80-959.93

Finding the Fourth Proportional to 3,151.20, 4,726.80 and 959.93

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Solution

The fourth proportional to 3,151.20, 4,726.80 and 959.93 is: 1,439.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.20 : 4,726.80 = 959.93 : x
  2. Step 2: Convert to fraction form
    3,151.20/4,726.80 = 959.93/x
  3. Step 3: Cross multiply
    3,151.20x = 4,726.80 × 959.93
  4. Step 4: Simplify right side
    3,151.20x = 4,537,373.49
  5. Step 5: Solve for x
    x = 4,537,373.49/3,151.20
  6. Step 6: Final answer
    x = 1,439.89

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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.