Home / 1,357.30-2,036.05-383.39

Finding the Fourth Proportional to 1,357.30, 2,036.05 and 383.39

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Solution

The fourth proportional to 1,357.30, 2,036.05 and 383.39 is: 575.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.30 : 2,036.05 = 383.39 : x
  2. Step 2: Convert to fraction form
    1,357.30/2,036.05 = 383.39/x
  3. Step 3: Cross multiply
    1,357.30x = 2,036.05 × 383.39
  4. Step 4: Simplify right side
    1,357.30x = 780,601.21
  5. Step 5: Solve for x
    x = 780,601.21/1,357.30
  6. Step 6: Final answer
    x = 575.11

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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.