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Finding the Fourth Proportional to 3,488.60, 5,232.96 and 891.56

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Solution

The fourth proportional to 3,488.60, 5,232.96 and 891.56 is: 1,337.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.60 : 5,232.96 = 891.56 : x
  2. Step 2: Convert to fraction form
    3,488.60/5,232.96 = 891.56/x
  3. Step 3: Cross multiply
    3,488.60x = 5,232.96 × 891.56
  4. Step 4: Simplify right side
    3,488.60x = 4,665,497.82
  5. Step 5: Solve for x
    x = 4,665,497.82/3,488.60
  6. Step 6: Final answer
    x = 1,337.36

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1.5x scale

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.