Home / 1,371.36-2,057.34-397.55

Finding the Fourth Proportional to 1,371.36, 2,057.34 and 397.55

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Solution

The fourth proportional to 1,371.36, 2,057.34 and 397.55 is: 596.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.36 : 2,057.34 = 397.55 : x
  2. Step 2: Convert to fraction form
    1,371.36/2,057.34 = 397.55/x
  3. Step 3: Cross multiply
    1,371.36x = 2,057.34 × 397.55
  4. Step 4: Simplify right side
    1,371.36x = 817,885.23
  5. Step 5: Solve for x
    x = 817,885.23/1,371.36
  6. Step 6: Final answer
    x = 596.40

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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.