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Finding the Fourth Proportional to 2,915.70, 4,373.07 and 1,355.64

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Solution

The fourth proportional to 2,915.70, 4,373.07 and 1,355.64 is: 2,033.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.70 : 4,373.07 = 1,355.64 : x
  2. Step 2: Convert to fraction form
    2,915.70/4,373.07 = 1,355.64/x
  3. Step 3: Cross multiply
    2,915.70x = 4,373.07 × 1,355.64
  4. Step 4: Simplify right side
    2,915.70x = 5,928,308.61
  5. Step 5: Solve for x
    x = 5,928,308.61/2,915.70
  6. Step 6: Final answer
    x = 2,033.24

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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.