Home / 3,869.95-5,340.63-2,276.71

Finding the Fourth Proportional to 3,869.95, 5,340.63 and 2,276.71

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Solution

The fourth proportional to 3,869.95, 5,340.63 and 2,276.71 is: 3,141.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.95 : 5,340.63 = 2,276.71 : x
  2. Step 2: Convert to fraction form
    3,869.95/5,340.63 = 2,276.71/x
  3. Step 3: Cross multiply
    3,869.95x = 5,340.63 × 2,276.71
  4. Step 4: Simplify right side
    3,869.95x = 12,159,039.02
  5. Step 5: Solve for x
    x = 12,159,039.02/3,869.95
  6. Step 6: Final answer
    x = 3,141.92

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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.