Home / 3,061.10-4,224.03-2,117.90

Finding the Fourth Proportional to 3,061.10, 4,224.03 and 2,117.90

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Solution

The fourth proportional to 3,061.10, 4,224.03 and 2,117.90 is: 2,922.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,061.10 : 4,224.03 = 2,117.90 : x
  2. Step 2: Convert to fraction form
    3,061.10/4,224.03 = 2,117.90/x
  3. Step 3: Cross multiply
    3,061.10x = 4,224.03 × 2,117.90
  4. Step 4: Simplify right side
    3,061.10x = 8,946,073.14
  5. Step 5: Solve for x
    x = 8,946,073.14/3,061.10
  6. Step 6: Final answer
    x = 2,922.50

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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.