Home / 8,345.60-12,511.12-4,179.78

Finding the Fourth Proportional to 8,345.60, 12,511.12 and 4,179.78

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Solution

The fourth proportional to 8,345.60, 12,511.12 and 4,179.78 is: 6,266.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.60 : 12,511.12 = 4,179.78 : x
  2. Step 2: Convert to fraction form
    8,345.60/12,511.12 = 4,179.78/x
  3. Step 3: Cross multiply
    8,345.60x = 12,511.12 × 4,179.78
  4. Step 4: Simplify right side
    8,345.60x = 52,293,729.15
  5. Step 5: Solve for x
    x = 52,293,729.15/8,345.60
  6. Step 6: Final answer
    x = 6,266.02

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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.