Home / 2,543.80-3,815.70-1,082.56

Finding the Fourth Proportional to 2,543.80, 3,815.70 and 1,082.56

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Solution

The fourth proportional to 2,543.80, 3,815.70 and 1,082.56 is: 1,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.80 : 3,815.70 = 1,082.56 : x
  2. Step 2: Convert to fraction form
    2,543.80/3,815.70 = 1,082.56/x
  3. Step 3: Cross multiply
    2,543.80x = 3,815.70 × 1,082.56
  4. Step 4: Simplify right side
    2,543.80x = 4,130,724.19
  5. Step 5: Solve for x
    x = 4,130,724.19/2,543.80
  6. Step 6: Final answer
    x = 1,623.84

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Similar ratio
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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.