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Finding the Fourth Proportional to 7,392.10, 11,087.84 and 3,442

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Solution

The fourth proportional to 7,392.10, 11,087.84 and 3,442 is: 5,162.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,392.10 : 11,087.84 = 3,442 : x
  2. Step 2: Convert to fraction form
    7,392.10/11,087.84 = 3,442/x
  3. Step 3: Cross multiply
    7,392.10x = 11,087.84 × 3,442
  4. Step 4: Simplify right side
    7,392.10x = 38,164,345.28
  5. Step 5: Solve for x
    x = 38,164,345.28/7,392.10
  6. Step 6: Final answer
    x = 5,162.86

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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.