Home / 3,512.18-5,268.54-1,320.86

Finding the Fourth Proportional to 3,512.18, 5,268.54 and 1,320.86

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Solution

The fourth proportional to 3,512.18, 5,268.54 and 1,320.86 is: 1,981.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.18 : 5,268.54 = 1,320.86 : x
  2. Step 2: Convert to fraction form
    3,512.18/5,268.54 = 1,320.86/x
  3. Step 3: Cross multiply
    3,512.18x = 5,268.54 × 1,320.86
  4. Step 4: Simplify right side
    3,512.18x = 6,959,003.74
  5. Step 5: Solve for x
    x = 6,959,003.74/3,512.18
  6. Step 6: Final answer
    x = 1,981.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.