Home / 5,414.69-7,472.39-3,178.18

Finding the Fourth Proportional to 5,414.69, 7,472.39 and 3,178.18

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Solution

The fourth proportional to 5,414.69, 7,472.39 and 3,178.18 is: 4,385.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.69 : 7,472.39 = 3,178.18 : x
  2. Step 2: Convert to fraction form
    5,414.69/7,472.39 = 3,178.18/x
  3. Step 3: Cross multiply
    5,414.69x = 7,472.39 × 3,178.18
  4. Step 4: Simplify right side
    5,414.69x = 23,748,589.71
  5. Step 5: Solve for x
    x = 23,748,589.71/5,414.69
  6. Step 6: Final answer
    x = 4,385.95

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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.