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Finding the Fourth Proportional to 3,356.48, 5,034.32 and 891.48

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Solution

The fourth proportional to 3,356.48, 5,034.32 and 891.48 is: 1,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,356.48 : 5,034.32 = 891.48 : x
  2. Step 2: Convert to fraction form
    3,356.48/5,034.32 = 891.48/x
  3. Step 3: Cross multiply
    3,356.48x = 5,034.32 × 891.48
  4. Step 4: Simplify right side
    3,356.48x = 4,487,995.59
  5. Step 5: Solve for x
    x = 4,487,995.59/3,356.48
  6. Step 6: Final answer
    x = 1,337.11

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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.