Home / 5,119.18-7,064.70-2,881.20

Finding the Fourth Proportional to 5,119.18, 7,064.70 and 2,881.20

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Solution

The fourth proportional to 5,119.18, 7,064.70 and 2,881.20 is: 3,976.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.18 : 7,064.70 = 2,881.20 : x
  2. Step 2: Convert to fraction form
    5,119.18/7,064.70 = 2,881.20/x
  3. Step 3: Cross multiply
    5,119.18x = 7,064.70 × 2,881.20
  4. Step 4: Simplify right side
    5,119.18x = 20,354,843.24
  5. Step 5: Solve for x
    x = 20,354,843.24/5,119.18
  6. Step 6: Final answer
    x = 3,976.19

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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.