Home / 3,869.19-5,339.60-2,275.96

Finding the Fourth Proportional to 3,869.19, 5,339.60 and 2,275.96

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Solution

The fourth proportional to 3,869.19, 5,339.60 and 2,275.96 is: 3,140.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.19 : 5,339.60 = 2,275.96 : x
  2. Step 2: Convert to fraction form
    3,869.19/5,339.60 = 2,275.96/x
  3. Step 3: Cross multiply
    3,869.19x = 5,339.60 × 2,275.96
  4. Step 4: Simplify right side
    3,869.19x = 12,152,691.29
  5. Step 5: Solve for x
    x = 12,152,691.29/3,869.19
  6. Step 6: Final answer
    x = 3,140.89

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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.