Home / 1,357.28-2,036.30-383.38

Finding the Fourth Proportional to 1,357.28, 2,036.30 and 383.38

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Solution

The fourth proportional to 1,357.28, 2,036.30 and 383.38 is: 575.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.28 : 2,036.30 = 383.38 : x
  2. Step 2: Convert to fraction form
    1,357.28/2,036.30 = 383.38/x
  3. Step 3: Cross multiply
    1,357.28x = 2,036.30 × 383.38
  4. Step 4: Simplify right side
    1,357.28x = 780,676.69
  5. Step 5: Solve for x
    x = 780,676.69/1,357.28
  6. Step 6: Final answer
    x = 575.18

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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.