Home / 2,080.59-3,122.01-1,387.64

Finding the Fourth Proportional to 2,080.59, 3,122.01 and 1,387.64

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Solution

The fourth proportional to 2,080.59, 3,122.01 and 1,387.64 is: 2,082.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.59 : 3,122.01 = 1,387.64 : x
  2. Step 2: Convert to fraction form
    2,080.59/3,122.01 = 1,387.64/x
  3. Step 3: Cross multiply
    2,080.59x = 3,122.01 × 1,387.64
  4. Step 4: Simplify right side
    2,080.59x = 4,332,225.96
  5. Step 5: Solve for x
    x = 4,332,225.96/2,080.59
  6. Step 6: Final answer
    x = 2,082.21

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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.