Home / 3,711.18-5,120.10-2,219.16

Finding the Fourth Proportional to 3,711.18, 5,120.10 and 2,219.16

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Solution

The fourth proportional to 3,711.18, 5,120.10 and 2,219.16 is: 3,061.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.18 : 5,120.10 = 2,219.16 : x
  2. Step 2: Convert to fraction form
    3,711.18/5,120.10 = 2,219.16/x
  3. Step 3: Cross multiply
    3,711.18x = 5,120.10 × 2,219.16
  4. Step 4: Simplify right side
    3,711.18x = 11,362,321.12
  5. Step 5: Solve for x
    x = 11,362,321.12/3,711.18
  6. Step 6: Final answer
    x = 3,061.65

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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.