Home / 8,078.30-12,117.45-2,884.70

Finding the Fourth Proportional to 8,078.30, 12,117.45 and 2,884.70

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Solution

The fourth proportional to 8,078.30, 12,117.45 and 2,884.70 is: 4,327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.30 : 12,117.45 = 2,884.70 : x
  2. Step 2: Convert to fraction form
    8,078.30/12,117.45 = 2,884.70/x
  3. Step 3: Cross multiply
    8,078.30x = 12,117.45 × 2,884.70
  4. Step 4: Simplify right side
    8,078.30x = 34,955,208.02
  5. Step 5: Solve for x
    x = 34,955,208.02/8,078.30
  6. Step 6: Final answer
    x = 4,327.05

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Similar ratio
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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.