Home / 7,115.56-9,819.56-4,131.52

Finding the Fourth Proportional to 7,115.56, 9,819.56 and 4,131.52

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Solution

The fourth proportional to 7,115.56, 9,819.56 and 4,131.52 is: 5,701.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.56 : 9,819.56 = 4,131.52 : x
  2. Step 2: Convert to fraction form
    7,115.56/9,819.56 = 4,131.52/x
  3. Step 3: Cross multiply
    7,115.56x = 9,819.56 × 4,131.52
  4. Step 4: Simplify right side
    7,115.56x = 40,569,708.53
  5. Step 5: Solve for x
    x = 40,569,708.53/7,115.56
  6. Step 6: Final answer
    x = 5,701.55

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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.