Home / 8,821.20-12,178.20-6,595.28

Finding the Fourth Proportional to 8,821.20, 12,178.20 and 6,595.28

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Solution

The fourth proportional to 8,821.20, 12,178.20 and 6,595.28 is: 9,105.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.20 : 12,178.20 = 6,595.28 : x
  2. Step 2: Convert to fraction form
    8,821.20/12,178.20 = 6,595.28/x
  3. Step 3: Cross multiply
    8,821.20x = 12,178.20 × 6,595.28
  4. Step 4: Simplify right side
    8,821.20x = 80,318,638.90
  5. Step 5: Solve for x
    x = 80,318,638.90/8,821.20
  6. Step 6: Final answer
    x = 9,105.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.