Home / 1,371.52-2,057.30-345.52

Finding the Fourth Proportional to 1,371.52, 2,057.30 and 345.52

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Solution

The fourth proportional to 1,371.52, 2,057.30 and 345.52 is: 518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.52 : 2,057.30 = 345.52 : x
  2. Step 2: Convert to fraction form
    1,371.52/2,057.30 = 345.52/x
  3. Step 3: Cross multiply
    1,371.52x = 2,057.30 × 345.52
  4. Step 4: Simplify right side
    1,371.52x = 710,838.30
  5. Step 5: Solve for x
    x = 710,838.30/1,371.52
  6. Step 6: Final answer
    x = 518.29

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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.