Home / 2,113.20-2,912.28-1,589.04

Finding the Fourth Proportional to 2,113.20, 2,912.28 and 1,589.04

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Solution

The fourth proportional to 2,113.20, 2,912.28 and 1,589.04 is: 2,189.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.20 : 2,912.28 = 1,589.04 : x
  2. Step 2: Convert to fraction form
    2,113.20/2,912.28 = 1,589.04/x
  3. Step 3: Cross multiply
    2,113.20x = 2,912.28 × 1,589.04
  4. Step 4: Simplify right side
    2,113.20x = 4,627,729.41
  5. Step 5: Solve for x
    x = 4,627,729.41/2,113.20
  6. Step 6: Final answer
    x = 2,189.92

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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.