Home / 6,640.20-9,164.52-4,378.14

Finding the Fourth Proportional to 6,640.20, 9,164.52 and 4,378.14

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Solution

The fourth proportional to 6,640.20, 9,164.52 and 4,378.14 is: 6,042.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.20 : 9,164.52 = 4,378.14 : x
  2. Step 2: Convert to fraction form
    6,640.20/9,164.52 = 4,378.14/x
  3. Step 3: Cross multiply
    6,640.20x = 9,164.52 × 4,378.14
  4. Step 4: Simplify right side
    6,640.20x = 40,123,551.59
  5. Step 5: Solve for x
    x = 40,123,551.59/6,640.20
  6. Step 6: Final answer
    x = 6,042.52

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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.