Home / 2,158.20-3,239.70-1,337.40

Finding the Fourth Proportional to 2,158.20, 3,239.70 and 1,337.40

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Solution

The fourth proportional to 2,158.20, 3,239.70 and 1,337.40 is: 2,007.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.20 : 3,239.70 = 1,337.40 : x
  2. Step 2: Convert to fraction form
    2,158.20/3,239.70 = 1,337.40/x
  3. Step 3: Cross multiply
    2,158.20x = 3,239.70 × 1,337.40
  4. Step 4: Simplify right side
    2,158.20x = 4,332,774.78
  5. Step 5: Solve for x
    x = 4,332,774.78/2,158.20
  6. Step 6: Final answer
    x = 2,007.59

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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.