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Finding the Fourth Proportional to 5,415.88, 7,472.36 and 3,425.72

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Solution

The fourth proportional to 5,415.88, 7,472.36 and 3,425.72 is: 4,726.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.88 : 7,472.36 = 3,425.72 : x
  2. Step 2: Convert to fraction form
    5,415.88/7,472.36 = 3,425.72/x
  3. Step 3: Cross multiply
    5,415.88x = 7,472.36 × 3,425.72
  4. Step 4: Simplify right side
    5,415.88x = 25,598,213.10
  5. Step 5: Solve for x
    x = 25,598,213.10/5,415.88
  6. Step 6: Final answer
    x = 4,726.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.