Home / 6,138.17-8,470.29-3,620.39

Finding the Fourth Proportional to 6,138.17, 8,470.29 and 3,620.39

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Solution

The fourth proportional to 6,138.17, 8,470.29 and 3,620.39 is: 4,995.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.17 : 8,470.29 = 3,620.39 : x
  2. Step 2: Convert to fraction form
    6,138.17/8,470.29 = 3,620.39/x
  3. Step 3: Cross multiply
    6,138.17x = 8,470.29 × 3,620.39
  4. Step 4: Simplify right side
    6,138.17x = 30,665,724.44
  5. Step 5: Solve for x
    x = 30,665,724.44/6,138.17
  6. Step 6: Final answer
    x = 4,995.91

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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.