Home / 2,769.80-4,154.70-2,586.20

Finding the Fourth Proportional to 2,769.80, 4,154.70 and 2,586.20

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Solution

The fourth proportional to 2,769.80, 4,154.70 and 2,586.20 is: 3,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,769.80 : 4,154.70 = 2,586.20 : x
  2. Step 2: Convert to fraction form
    2,769.80/4,154.70 = 2,586.20/x
  3. Step 3: Cross multiply
    2,769.80x = 4,154.70 × 2,586.20
  4. Step 4: Simplify right side
    2,769.80x = 10,744,885.14
  5. Step 5: Solve for x
    x = 10,744,885.14/2,769.80
  6. Step 6: Final answer
    x = 3,879.30

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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.