Home / 2,159.96-2,981.10-1,276.44

Finding the Fourth Proportional to 2,159.96, 2,981.10 and 1,276.44

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Solution

The fourth proportional to 2,159.96, 2,981.10 and 1,276.44 is: 1,761.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.96 : 2,981.10 = 1,276.44 : x
  2. Step 2: Convert to fraction form
    2,159.96/2,981.10 = 1,276.44/x
  3. Step 3: Cross multiply
    2,159.96x = 2,981.10 × 1,276.44
  4. Step 4: Simplify right side
    2,159.96x = 3,805,195.28
  5. Step 5: Solve for x
    x = 3,805,195.28/2,159.96
  6. Step 6: Final answer
    x = 1,761.70

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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.