Home / 1,851.10-2,552.85-1,221.18

Finding the Fourth Proportional to 1,851.10, 2,552.85 and 1,221.18

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Solution

The fourth proportional to 1,851.10, 2,552.85 and 1,221.18 is: 1,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.10 : 2,552.85 = 1,221.18 : x
  2. Step 2: Convert to fraction form
    1,851.10/2,552.85 = 1,221.18/x
  3. Step 3: Cross multiply
    1,851.10x = 2,552.85 × 1,221.18
  4. Step 4: Simplify right side
    1,851.10x = 3,117,489.36
  5. Step 5: Solve for x
    x = 3,117,489.36/1,851.10
  6. Step 6: Final answer
    x = 1,684.13

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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.