Home / 8,769.20-13,145.40-2,922.80

Finding the Fourth Proportional to 8,769.20, 13,145.40 and 2,922.80

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Solution

The fourth proportional to 8,769.20, 13,145.40 and 2,922.80 is: 4,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,769.20 : 13,145.40 = 2,922.80 : x
  2. Step 2: Convert to fraction form
    8,769.20/13,145.40 = 2,922.80/x
  3. Step 3: Cross multiply
    8,769.20x = 13,145.40 × 2,922.80
  4. Step 4: Simplify right side
    8,769.20x = 38,421,375.12
  5. Step 5: Solve for x
    x = 38,421,375.12/8,769.20
  6. Step 6: Final answer
    x = 4,381.40

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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.