Home / 6,140.12-8,470.84-4,278.20

Finding the Fourth Proportional to 6,140.12, 8,470.84 and 4,278.20

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Solution

The fourth proportional to 6,140.12, 8,470.84 and 4,278.20 is: 5,902.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,140.12 : 8,470.84 = 4,278.20 : x
  2. Step 2: Convert to fraction form
    6,140.12/8,470.84 = 4,278.20/x
  3. Step 3: Cross multiply
    6,140.12x = 8,470.84 × 4,278.20
  4. Step 4: Simplify right side
    6,140.12x = 36,239,947.69
  5. Step 5: Solve for x
    x = 36,239,947.69/6,140.12
  6. Step 6: Final answer
    x = 5,902.16

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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.