Home / 1,481.04-2,043.81-817.88

Finding the Fourth Proportional to 1,481.04, 2,043.81 and 817.88

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Solution

The fourth proportional to 1,481.04, 2,043.81 and 817.88 is: 1,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.04 : 2,043.81 = 817.88 : x
  2. Step 2: Convert to fraction form
    1,481.04/2,043.81 = 817.88/x
  3. Step 3: Cross multiply
    1,481.04x = 2,043.81 × 817.88
  4. Step 4: Simplify right side
    1,481.04x = 1,671,581.10
  5. Step 5: Solve for x
    x = 1,671,581.10/1,481.04
  6. Step 6: Final answer
    x = 1,128.65

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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.