Home / 4,145.28-5,721.04-2,819.40

Finding the Fourth Proportional to 4,145.28, 5,721.04 and 2,819.40

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Solution

The fourth proportional to 4,145.28, 5,721.04 and 2,819.40 is: 3,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,145.28 : 5,721.04 = 2,819.40 : x
  2. Step 2: Convert to fraction form
    4,145.28/5,721.04 = 2,819.40/x
  3. Step 3: Cross multiply
    4,145.28x = 5,721.04 × 2,819.40
  4. Step 4: Simplify right side
    4,145.28x = 16,129,900.18
  5. Step 5: Solve for x
    x = 16,129,900.18/4,145.28
  6. Step 6: Final answer
    x = 3,891.15

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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.