Home / 8,785.24-12,122.44-5,247.70

Finding the Fourth Proportional to 8,785.24, 12,122.44 and 5,247.70

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Solution

The fourth proportional to 8,785.24, 12,122.44 and 5,247.70 is: 7,241.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.24 : 12,122.44 = 5,247.70 : x
  2. Step 2: Convert to fraction form
    8,785.24/12,122.44 = 5,247.70/x
  3. Step 3: Cross multiply
    8,785.24x = 12,122.44 × 5,247.70
  4. Step 4: Simplify right side
    8,785.24x = 63,614,967.91
  5. Step 5: Solve for x
    x = 63,614,967.91/8,785.24
  6. Step 6: Final answer
    x = 7,241.12

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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.