Home / 3,710.38-5,120.79-2,219.12

Finding the Fourth Proportional to 3,710.38, 5,120.79 and 2,219.12

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Solution

The fourth proportional to 3,710.38, 5,120.79 and 2,219.12 is: 3,062.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,710.38 : 5,120.79 = 2,219.12 : x
  2. Step 2: Convert to fraction form
    3,710.38/5,120.79 = 2,219.12/x
  3. Step 3: Cross multiply
    3,710.38x = 5,120.79 × 2,219.12
  4. Step 4: Simplify right side
    3,710.38x = 11,363,647.50
  5. Step 5: Solve for x
    x = 11,363,647.50/3,710.38
  6. Step 6: Final answer
    x = 3,062.66

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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.