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Finding the Fourth Proportional to 5,146.32, 7,721.40 and 2,374.32

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Solution

The fourth proportional to 5,146.32, 7,721.40 and 2,374.32 is: 3,562.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.32 : 7,721.40 = 2,374.32 : x
  2. Step 2: Convert to fraction form
    5,146.32/7,721.40 = 2,374.32/x
  3. Step 3: Cross multiply
    5,146.32x = 7,721.40 × 2,374.32
  4. Step 4: Simplify right side
    5,146.32x = 18,333,074.45
  5. Step 5: Solve for x
    x = 18,333,074.45/5,146.32
  6. Step 6: Final answer
    x = 3,562.37

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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.