Home / 3,869.64-5,340.22-2,276.39

Finding the Fourth Proportional to 3,869.64, 5,340.22 and 2,276.39

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Solution

The fourth proportional to 3,869.64, 5,340.22 and 2,276.39 is: 3,141.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.64 : 5,340.22 = 2,276.39 : x
  2. Step 2: Convert to fraction form
    3,869.64/5,340.22 = 2,276.39/x
  3. Step 3: Cross multiply
    3,869.64x = 5,340.22 × 2,276.39
  4. Step 4: Simplify right side
    3,869.64x = 12,156,431.07
  5. Step 5: Solve for x
    x = 12,156,431.07/3,869.64
  6. Step 6: Final answer
    x = 3,141.49

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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.