Home / 9,375.45-12,938.04-5,342.78

Finding the Fourth Proportional to 9,375.45, 12,938.04 and 5,342.78

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Solution

The fourth proportional to 9,375.45, 12,938.04 and 5,342.78 is: 7,372.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,375.45 : 12,938.04 = 5,342.78 : x
  2. Step 2: Convert to fraction form
    9,375.45/12,938.04 = 5,342.78/x
  3. Step 3: Cross multiply
    9,375.45x = 12,938.04 × 5,342.78
  4. Step 4: Simplify right side
    9,375.45x = 69,125,036.66
  5. Step 5: Solve for x
    x = 69,125,036.66/9,375.45
  6. Step 6: Final answer
    x = 7,372.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.