Home / 3,145.38-4,341.65-2,028.39

Finding the Fourth Proportional to 3,145.38, 4,341.65 and 2,028.39

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Solution

The fourth proportional to 3,145.38, 4,341.65 and 2,028.39 is: 2,799.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.38 : 4,341.65 = 2,028.39 : x
  2. Step 2: Convert to fraction form
    3,145.38/4,341.65 = 2,028.39/x
  3. Step 3: Cross multiply
    3,145.38x = 4,341.65 × 2,028.39
  4. Step 4: Simplify right side
    3,145.38x = 8,806,549.30
  5. Step 5: Solve for x
    x = 8,806,549.30/3,145.38
  6. Step 6: Final answer
    x = 2,799.84

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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.