Home / 5,057.16-6,979.28-2,819.76

Finding the Fourth Proportional to 5,057.16, 6,979.28 and 2,819.76

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Solution

The fourth proportional to 5,057.16, 6,979.28 and 2,819.76 is: 3,891.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.16 : 6,979.28 = 2,819.76 : x
  2. Step 2: Convert to fraction form
    5,057.16/6,979.28 = 2,819.76/x
  3. Step 3: Cross multiply
    5,057.16x = 6,979.28 × 2,819.76
  4. Step 4: Simplify right side
    5,057.16x = 19,679,894.57
  5. Step 5: Solve for x
    x = 19,679,894.57/5,057.16
  6. Step 6: Final answer
    x = 3,891.49

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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.