Home / 8,031.15-12,046.61-2,187.75

Finding the Fourth Proportional to 8,031.15, 12,046.61 and 2,187.75

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Solution

The fourth proportional to 8,031.15, 12,046.61 and 2,187.75 is: 3,281.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,031.15 : 12,046.61 = 2,187.75 : x
  2. Step 2: Convert to fraction form
    8,031.15/12,046.61 = 2,187.75/x
  3. Step 3: Cross multiply
    8,031.15x = 12,046.61 × 2,187.75
  4. Step 4: Simplify right side
    8,031.15x = 26,354,899.86
  5. Step 5: Solve for x
    x = 26,354,899.86/8,031.15
  6. Step 6: Final answer
    x = 3,281.58

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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.