Home / 1,359.35-2,039.28-579.34

Finding the Fourth Proportional to 1,359.35, 2,039.28 and 579.34

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Solution

The fourth proportional to 1,359.35, 2,039.28 and 579.34 is: 869.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.35 : 2,039.28 = 579.34 : x
  2. Step 2: Convert to fraction form
    1,359.35/2,039.28 = 579.34/x
  3. Step 3: Cross multiply
    1,359.35x = 2,039.28 × 579.34
  4. Step 4: Simplify right side
    1,359.35x = 1,181,436.48
  5. Step 5: Solve for x
    x = 1,181,436.48/1,359.35
  6. Step 6: Final answer
    x = 869.12

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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.