Home / 5,057.57-6,979.10-2,819.57

Finding the Fourth Proportional to 5,057.57, 6,979.10 and 2,819.57

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Solution

The fourth proportional to 5,057.57, 6,979.10 and 2,819.57 is: 3,890.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.57 : 6,979.10 = 2,819.57 : x
  2. Step 2: Convert to fraction form
    5,057.57/6,979.10 = 2,819.57/x
  3. Step 3: Cross multiply
    5,057.57x = 6,979.10 × 2,819.57
  4. Step 4: Simplify right side
    5,057.57x = 19,678,064.34
  5. Step 5: Solve for x
    x = 19,678,064.34/5,057.57
  6. Step 6: Final answer
    x = 3,890.81

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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.