Home / 8,546.20-12,819.30-5,781.40

Finding the Fourth Proportional to 8,546.20, 12,819.30 and 5,781.40

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Solution

The fourth proportional to 8,546.20, 12,819.30 and 5,781.40 is: 8,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,546.20 : 12,819.30 = 5,781.40 : x
  2. Step 2: Convert to fraction form
    8,546.20/12,819.30 = 5,781.40/x
  3. Step 3: Cross multiply
    8,546.20x = 12,819.30 × 5,781.40
  4. Step 4: Simplify right side
    8,546.20x = 74,113,501.02
  5. Step 5: Solve for x
    x = 74,113,501.02/8,546.20
  6. Step 6: Final answer
    x = 8,672.10

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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.