Home / 6,138.40-8,470.24-4,153.28

Finding the Fourth Proportional to 6,138.40, 8,470.24 and 4,153.28

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Solution

The fourth proportional to 6,138.40, 8,470.24 and 4,153.28 is: 5,731.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.40 : 8,470.24 = 4,153.28 : x
  2. Step 2: Convert to fraction form
    6,138.40/8,470.24 = 4,153.28/x
  3. Step 3: Cross multiply
    6,138.40x = 8,470.24 × 4,153.28
  4. Step 4: Simplify right side
    6,138.40x = 35,179,278.39
  5. Step 5: Solve for x
    x = 35,179,278.39/6,138.40
  6. Step 6: Final answer
    x = 5,731.02

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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.