Home / 1,281.04-1,921.68-356.59

Finding the Fourth Proportional to 1,281.04, 1,921.68 and 356.59

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Solution

The fourth proportional to 1,281.04, 1,921.68 and 356.59 is: 534.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281.04 : 1,921.68 = 356.59 : x
  2. Step 2: Convert to fraction form
    1,281.04/1,921.68 = 356.59/x
  3. Step 3: Cross multiply
    1,281.04x = 1,921.68 × 356.59
  4. Step 4: Simplify right side
    1,281.04x = 685,251.87
  5. Step 5: Solve for x
    x = 685,251.87/1,281.04
  6. Step 6: Final answer
    x = 534.92

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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.