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Finding the Fourth Proportional to 1,956.93, 2,934.69 and 724.08

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Solution

The fourth proportional to 1,956.93, 2,934.69 and 724.08 is: 1,085.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956.93 : 2,934.69 = 724.08 : x
  2. Step 2: Convert to fraction form
    1,956.93/2,934.69 = 724.08/x
  3. Step 3: Cross multiply
    1,956.93x = 2,934.69 × 724.08
  4. Step 4: Simplify right side
    1,956.93x = 2,124,950.34
  5. Step 5: Solve for x
    x = 2,124,950.34/1,956.93
  6. Step 6: Final answer
    x = 1,085.86

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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.