Home / 2,291.13-3,161.61-1,296.39

Finding the Fourth Proportional to 2,291.13, 3,161.61 and 1,296.39

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Solution

The fourth proportional to 2,291.13, 3,161.61 and 1,296.39 is: 1,788.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.13 : 3,161.61 = 1,296.39 : x
  2. Step 2: Convert to fraction form
    2,291.13/3,161.61 = 1,296.39/x
  3. Step 3: Cross multiply
    2,291.13x = 3,161.61 × 1,296.39
  4. Step 4: Simplify right side
    2,291.13x = 4,098,657.30
  5. Step 5: Solve for x
    x = 4,098,657.30/2,291.13
  6. Step 6: Final answer
    x = 1,788.92

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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.