Home / 1,371.45-2,057.28-397.50

Finding the Fourth Proportional to 1,371.45, 2,057.28 and 397.50

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Solution

The fourth proportional to 1,371.45, 2,057.28 and 397.50 is: 596.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.45 : 2,057.28 = 397.50 : x
  2. Step 2: Convert to fraction form
    1,371.45/2,057.28 = 397.50/x
  3. Step 3: Cross multiply
    1,371.45x = 2,057.28 × 397.50
  4. Step 4: Simplify right side
    1,371.45x = 817,768.80
  5. Step 5: Solve for x
    x = 817,768.80/1,371.45
  6. Step 6: Final answer
    x = 596.28

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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.