Home / 7,215.38-9,957.24-4,028.61

Finding the Fourth Proportional to 7,215.38, 9,957.24 and 4,028.61

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Solution

The fourth proportional to 7,215.38, 9,957.24 and 4,028.61 is: 5,559.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.38 : 9,957.24 = 4,028.61 : x
  2. Step 2: Convert to fraction form
    7,215.38/9,957.24 = 4,028.61/x
  3. Step 3: Cross multiply
    7,215.38x = 9,957.24 × 4,028.61
  4. Step 4: Simplify right side
    7,215.38x = 40,113,836.64
  5. Step 5: Solve for x
    x = 40,113,836.64/7,215.38
  6. Step 6: Final answer
    x = 5,559.49

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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.