Home / 6,260.80-9,380.40-5,159.20

Finding the Fourth Proportional to 6,260.80, 9,380.40 and 5,159.20

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Solution

The fourth proportional to 6,260.80, 9,380.40 and 5,159.20 is: 7,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,260.80 : 9,380.40 = 5,159.20 : x
  2. Step 2: Convert to fraction form
    6,260.80/9,380.40 = 5,159.20/x
  3. Step 3: Cross multiply
    6,260.80x = 9,380.40 × 5,159.20
  4. Step 4: Simplify right side
    6,260.80x = 48,395,359.68
  5. Step 5: Solve for x
    x = 48,395,359.68/6,260.80
  6. Step 6: Final answer
    x = 7,729.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.