Home / 8,037.20-12,041.40-7,115.60

Finding the Fourth Proportional to 8,037.20, 12,041.40 and 7,115.60

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Solution

The fourth proportional to 8,037.20, 12,041.40 and 7,115.60 is: 10,660.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,037.20 : 12,041.40 = 7,115.60 : x
  2. Step 2: Convert to fraction form
    8,037.20/12,041.40 = 7,115.60/x
  3. Step 3: Cross multiply
    8,037.20x = 12,041.40 × 7,115.60
  4. Step 4: Simplify right side
    8,037.20x = 85,681,785.84
  5. Step 5: Solve for x
    x = 85,681,785.84/8,037.20
  6. Step 6: Final answer
    x = 10,660.65

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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.