Home / 3,712.13-5,119.86-2,219.75

Finding the Fourth Proportional to 3,712.13, 5,119.86 and 2,219.75

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Solution

The fourth proportional to 3,712.13, 5,119.86 and 2,219.75 is: 3,061.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.13 : 5,119.86 = 2,219.75 : x
  2. Step 2: Convert to fraction form
    3,712.13/5,119.86 = 2,219.75/x
  3. Step 3: Cross multiply
    3,712.13x = 5,119.86 × 2,219.75
  4. Step 4: Simplify right side
    3,712.13x = 11,364,827.47
  5. Step 5: Solve for x
    x = 11,364,827.47/3,712.13
  6. Step 6: Final answer
    x = 3,061.54

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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.