Home / 3,869.45-5,339.94-2,276.21

Finding the Fourth Proportional to 3,869.45, 5,339.94 and 2,276.21

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Solution

The fourth proportional to 3,869.45, 5,339.94 and 2,276.21 is: 3,141.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.45 : 5,339.94 = 2,276.21 : x
  2. Step 2: Convert to fraction form
    3,869.45/5,339.94 = 2,276.21/x
  3. Step 3: Cross multiply
    3,869.45x = 5,339.94 × 2,276.21
  4. Step 4: Simplify right side
    3,869.45x = 12,154,798.13
  5. Step 5: Solve for x
    x = 12,154,798.13/3,869.45
  6. Step 6: Final answer
    x = 3,141.23

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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.