Home / 8,189.40-12,281.28-2,641.32

Finding the Fourth Proportional to 8,189.40, 12,281.28 and 2,641.32

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Solution

The fourth proportional to 8,189.40, 12,281.28 and 2,641.32 is: 3,961.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,189.40 : 12,281.28 = 2,641.32 : x
  2. Step 2: Convert to fraction form
    8,189.40/12,281.28 = 2,641.32/x
  3. Step 3: Cross multiply
    8,189.40x = 12,281.28 × 2,641.32
  4. Step 4: Simplify right side
    8,189.40x = 32,438,790.49
  5. Step 5: Solve for x
    x = 32,438,790.49/8,189.40
  6. Step 6: Final answer
    x = 3,961.07

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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.