Home / 7,115.38-9,819.66-4,721.14

Finding the Fourth Proportional to 7,115.38, 9,819.66 and 4,721.14

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Solution

The fourth proportional to 7,115.38, 9,819.66 and 4,721.14 is: 6,515.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.38 : 9,819.66 = 4,721.14 : x
  2. Step 2: Convert to fraction form
    7,115.38/9,819.66 = 4,721.14/x
  3. Step 3: Cross multiply
    7,115.38x = 9,819.66 × 4,721.14
  4. Step 4: Simplify right side
    7,115.38x = 46,359,989.61
  5. Step 5: Solve for x
    x = 46,359,989.61/7,115.38
  6. Step 6: Final answer
    x = 6,515.46

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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.