Home / 3,869.22-5,339.64-2,275.99

Finding the Fourth Proportional to 3,869.22, 5,339.64 and 2,275.99

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Solution

The fourth proportional to 3,869.22, 5,339.64 and 2,275.99 is: 3,140.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.22 : 5,339.64 = 2,275.99 : x
  2. Step 2: Convert to fraction form
    3,869.22/5,339.64 = 2,275.99/x
  3. Step 3: Cross multiply
    3,869.22x = 5,339.64 × 2,275.99
  4. Step 4: Simplify right side
    3,869.22x = 12,152,949.63
  5. Step 5: Solve for x
    x = 12,152,949.63/3,869.22
  6. Step 6: Final answer
    x = 3,140.93

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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.