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Finding the Fourth Proportional to 1,418.13, 2,125.04 and 955.76

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Solution

The fourth proportional to 1,418.13, 2,125.04 and 955.76 is: 1,432.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.13 : 2,125.04 = 955.76 : x
  2. Step 2: Convert to fraction form
    1,418.13/2,125.04 = 955.76/x
  3. Step 3: Cross multiply
    1,418.13x = 2,125.04 × 955.76
  4. Step 4: Simplify right side
    1,418.13x = 2,031,012.83
  5. Step 5: Solve for x
    x = 2,031,012.83/1,418.13
  6. Step 6: Final answer
    x = 1,432.18

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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.