Home / 1,359.20-2,038.73-385.27

Finding the Fourth Proportional to 1,359.20, 2,038.73 and 385.27

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Solution

The fourth proportional to 1,359.20, 2,038.73 and 385.27 is: 577.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.20 : 2,038.73 = 385.27 : x
  2. Step 2: Convert to fraction form
    1,359.20/2,038.73 = 385.27/x
  3. Step 3: Cross multiply
    1,359.20x = 2,038.73 × 385.27
  4. Step 4: Simplify right side
    1,359.20x = 785,454.48
  5. Step 5: Solve for x
    x = 785,454.48/1,359.20
  6. Step 6: Final answer
    x = 577.88

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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.