Home / 1,600.89-2,387.21-1,489.92

Finding the Fourth Proportional to 1,600.89, 2,387.21 and 1,489.92

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Solution

The fourth proportional to 1,600.89, 2,387.21 and 1,489.92 is: 2,221.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,600.89 : 2,387.21 = 1,489.92 : x
  2. Step 2: Convert to fraction form
    1,600.89/2,387.21 = 1,489.92/x
  3. Step 3: Cross multiply
    1,600.89x = 2,387.21 × 1,489.92
  4. Step 4: Simplify right side
    1,600.89x = 3,556,751.92
  5. Step 5: Solve for x
    x = 3,556,751.92/1,600.89
  6. Step 6: Final answer
    x = 2,221.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.