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Finding the Fourth Proportional to 7,560.40, 11,342.40 and 3,175.60

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Solution

The fourth proportional to 7,560.40, 11,342.40 and 3,175.60 is: 4,764.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,560.40 : 11,342.40 = 3,175.60 : x
  2. Step 2: Convert to fraction form
    7,560.40/11,342.40 = 3,175.60/x
  3. Step 3: Cross multiply
    7,560.40x = 11,342.40 × 3,175.60
  4. Step 4: Simplify right side
    7,560.40x = 36,018,925.44
  5. Step 5: Solve for x
    x = 36,018,925.44/7,560.40
  6. Step 6: Final answer
    x = 4,764.16

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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.