Home / 3,869.77-5,340.21-2,276.59

Finding the Fourth Proportional to 3,869.77, 5,340.21 and 2,276.59

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Solution

The fourth proportional to 3,869.77, 5,340.21 and 2,276.59 is: 3,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.77 : 5,340.21 = 2,276.59 : x
  2. Step 2: Convert to fraction form
    3,869.77/5,340.21 = 2,276.59/x
  3. Step 3: Cross multiply
    3,869.77x = 5,340.21 × 2,276.59
  4. Step 4: Simplify right side
    3,869.77x = 12,157,457.30
  5. Step 5: Solve for x
    x = 12,157,457.30/3,869.77
  6. Step 6: Final answer
    x = 3,141.65

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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.