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Finding the Fourth Proportional to 1,627.79, 2,439.54 and 703.17

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Solution

The fourth proportional to 1,627.79, 2,439.54 and 703.17 is: 1,053.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.79 : 2,439.54 = 703.17 : x
  2. Step 2: Convert to fraction form
    1,627.79/2,439.54 = 703.17/x
  3. Step 3: Cross multiply
    1,627.79x = 2,439.54 × 703.17
  4. Step 4: Simplify right side
    1,627.79x = 1,715,411.34
  5. Step 5: Solve for x
    x = 1,715,411.34/1,627.79
  6. Step 6: Final answer
    x = 1,053.83

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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.