Home / 2,712.26-4,068.66-981.02

Finding the Fourth Proportional to 2,712.26, 4,068.66 and 981.02

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Solution

The fourth proportional to 2,712.26, 4,068.66 and 981.02 is: 1,471.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.26 : 4,068.66 = 981.02 : x
  2. Step 2: Convert to fraction form
    2,712.26/4,068.66 = 981.02/x
  3. Step 3: Cross multiply
    2,712.26x = 4,068.66 × 981.02
  4. Step 4: Simplify right side
    2,712.26x = 3,991,436.83
  5. Step 5: Solve for x
    x = 3,991,436.83/2,712.26
  6. Step 6: Final answer
    x = 1,471.63

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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.