Home / 3,116.25-4,301.61-2,121.96

Finding the Fourth Proportional to 3,116.25, 4,301.61 and 2,121.96

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Solution

The fourth proportional to 3,116.25, 4,301.61 and 2,121.96 is: 2,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.25 : 4,301.61 = 2,121.96 : x
  2. Step 2: Convert to fraction form
    3,116.25/4,301.61 = 2,121.96/x
  3. Step 3: Cross multiply
    3,116.25x = 4,301.61 × 2,121.96
  4. Step 4: Simplify right side
    3,116.25x = 9,127,844.36
  5. Step 5: Solve for x
    x = 9,127,844.36/3,116.25
  6. Step 6: Final answer
    x = 2,929.11

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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.