Home / 8,758.20-13,137.30-7,951.80

Finding the Fourth Proportional to 8,758.20, 13,137.30 and 7,951.80

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Solution

The fourth proportional to 8,758.20, 13,137.30 and 7,951.80 is: 11,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.20 : 13,137.30 = 7,951.80 : x
  2. Step 2: Convert to fraction form
    8,758.20/13,137.30 = 7,951.80/x
  3. Step 3: Cross multiply
    8,758.20x = 13,137.30 × 7,951.80
  4. Step 4: Simplify right side
    8,758.20x = 104,465,182.14
  5. Step 5: Solve for x
    x = 104,465,182.14/8,758.20
  6. Step 6: Final answer
    x = 11,927.70

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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.