Home / 1,589.46-2,193.20-890.70

Finding the Fourth Proportional to 1,589.46, 2,193.20 and 890.70

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Solution

The fourth proportional to 1,589.46, 2,193.20 and 890.70 is: 1,229.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.46 : 2,193.20 = 890.70 : x
  2. Step 2: Convert to fraction form
    1,589.46/2,193.20 = 890.70/x
  3. Step 3: Cross multiply
    1,589.46x = 2,193.20 × 890.70
  4. Step 4: Simplify right side
    1,589.46x = 1,953,483.24
  5. Step 5: Solve for x
    x = 1,953,483.24/1,589.46
  6. Step 6: Final answer
    x = 1,229.02

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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.