Home / 8,756.12-13,139.22-5,247.20

Finding the Fourth Proportional to 8,756.12, 13,139.22 and 5,247.20

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Solution

The fourth proportional to 8,756.12, 13,139.22 and 5,247.20 is: 7,873.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.12 : 13,139.22 = 5,247.20 : x
  2. Step 2: Convert to fraction form
    8,756.12/13,139.22 = 5,247.20/x
  3. Step 3: Cross multiply
    8,756.12x = 13,139.22 × 5,247.20
  4. Step 4: Simplify right side
    8,756.12x = 68,944,115.18
  5. Step 5: Solve for x
    x = 68,944,115.18/8,756.12
  6. Step 6: Final answer
    x = 7,873.82

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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.