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Finding the Fourth Proportional to 3,437.66, 5,156.82 and 972.56

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Solution

The fourth proportional to 3,437.66, 5,156.82 and 972.56 is: 1,458.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,437.66 : 5,156.82 = 972.56 : x
  2. Step 2: Convert to fraction form
    3,437.66/5,156.82 = 972.56/x
  3. Step 3: Cross multiply
    3,437.66x = 5,156.82 × 972.56
  4. Step 4: Simplify right side
    3,437.66x = 5,015,316.86
  5. Step 5: Solve for x
    x = 5,015,316.86/3,437.66
  6. Step 6: Final answer
    x = 1,458.93

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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.