Home / 7,515.70-11,273.55-5,431.30

Finding the Fourth Proportional to 7,515.70, 11,273.55 and 5,431.30

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Solution

The fourth proportional to 7,515.70, 11,273.55 and 5,431.30 is: 8,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,515.70 : 11,273.55 = 5,431.30 : x
  2. Step 2: Convert to fraction form
    7,515.70/11,273.55 = 5,431.30/x
  3. Step 3: Cross multiply
    7,515.70x = 11,273.55 × 5,431.30
  4. Step 4: Simplify right side
    7,515.70x = 61,230,032.12
  5. Step 5: Solve for x
    x = 61,230,032.12/7,515.70
  6. Step 6: Final answer
    x = 8,146.95

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Similar ratio
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1.5x scale

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.