Home / 1,489.20-2,057.10-1,144.20

Finding the Fourth Proportional to 1,489.20, 2,057.10 and 1,144.20

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Solution

The fourth proportional to 1,489.20, 2,057.10 and 1,144.20 is: 1,580.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.20 : 2,057.10 = 1,144.20 : x
  2. Step 2: Convert to fraction form
    1,489.20/2,057.10 = 1,144.20/x
  3. Step 3: Cross multiply
    1,489.20x = 2,057.10 × 1,144.20
  4. Step 4: Simplify right side
    1,489.20x = 2,353,733.82
  5. Step 5: Solve for x
    x = 2,353,733.82/1,489.20
  6. Step 6: Final answer
    x = 1,580.54

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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.