Home / 2,917.59-4,376.05-726.15

Finding the Fourth Proportional to 2,917.59, 4,376.05 and 726.15

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Solution

The fourth proportional to 2,917.59, 4,376.05 and 726.15 is: 1,089.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.59 : 4,376.05 = 726.15 : x
  2. Step 2: Convert to fraction form
    2,917.59/4,376.05 = 726.15/x
  3. Step 3: Cross multiply
    2,917.59x = 4,376.05 × 726.15
  4. Step 4: Simplify right side
    2,917.59x = 3,177,679.19
  5. Step 5: Solve for x
    x = 3,177,679.19/2,917.59
  6. Step 6: Final answer
    x = 1,089.14

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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.