Home / 8,385.12-12,579.52-3,191.04

Finding the Fourth Proportional to 8,385.12, 12,579.52 and 3,191.04

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Solution

The fourth proportional to 8,385.12, 12,579.52 and 3,191.04 is: 4,787.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.12 : 12,579.52 = 3,191.04 : x
  2. Step 2: Convert to fraction form
    8,385.12/12,579.52 = 3,191.04/x
  3. Step 3: Cross multiply
    8,385.12x = 12,579.52 × 3,191.04
  4. Step 4: Simplify right side
    8,385.12x = 40,141,751.50
  5. Step 5: Solve for x
    x = 40,141,751.50/8,385.12
  6. Step 6: Final answer
    x = 4,787.26

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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.