Home / 2,319.47-3,200.11-1,311.02

Finding the Fourth Proportional to 2,319.47, 3,200.11 and 1,311.02

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Solution

The fourth proportional to 2,319.47, 3,200.11 and 1,311.02 is: 1,808.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.47 : 3,200.11 = 1,311.02 : x
  2. Step 2: Convert to fraction form
    2,319.47/3,200.11 = 1,311.02/x
  3. Step 3: Cross multiply
    2,319.47x = 3,200.11 × 1,311.02
  4. Step 4: Simplify right side
    2,319.47x = 4,195,400.93
  5. Step 5: Solve for x
    x = 4,195,400.93/2,319.47
  6. Step 6: Final answer
    x = 1,808.78

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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.