Home / 2,191.20-3,023.52-1,307.04

Finding the Fourth Proportional to 2,191.20, 3,023.52 and 1,307.04

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Solution

The fourth proportional to 2,191.20, 3,023.52 and 1,307.04 is: 1,803.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.20 : 3,023.52 = 1,307.04 : x
  2. Step 2: Convert to fraction form
    2,191.20/3,023.52 = 1,307.04/x
  3. Step 3: Cross multiply
    2,191.20x = 3,023.52 × 1,307.04
  4. Step 4: Simplify right side
    2,191.20x = 3,951,861.58
  5. Step 5: Solve for x
    x = 3,951,861.58/2,191.20
  6. Step 6: Final answer
    x = 1,803.51

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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.