Home / 3,869.72-5,340.24-2,277.32

Finding the Fourth Proportional to 3,869.72, 5,340.24 and 2,277.32

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Solution

The fourth proportional to 3,869.72, 5,340.24 and 2,277.32 is: 3,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.72 : 5,340.24 = 2,277.32 : x
  2. Step 2: Convert to fraction form
    3,869.72/5,340.24 = 2,277.32/x
  3. Step 3: Cross multiply
    3,869.72x = 5,340.24 × 2,277.32
  4. Step 4: Simplify right side
    3,869.72x = 12,161,435.36
  5. Step 5: Solve for x
    x = 12,161,435.36/3,869.72
  6. Step 6: Final answer
    x = 3,142.72

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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.