Home / 5,479.38-7,561.42-3,211.28

Finding the Fourth Proportional to 5,479.38, 7,561.42 and 3,211.28

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Solution

The fourth proportional to 5,479.38, 7,561.42 and 3,211.28 is: 4,431.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.38 : 7,561.42 = 3,211.28 : x
  2. Step 2: Convert to fraction form
    5,479.38/7,561.42 = 3,211.28/x
  3. Step 3: Cross multiply
    5,479.38x = 7,561.42 × 3,211.28
  4. Step 4: Simplify right side
    5,479.38x = 24,281,836.82
  5. Step 5: Solve for x
    x = 24,281,836.82/5,479.38
  6. Step 6: Final answer
    x = 4,431.49

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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.