Home / 1,246.06-1,869.11-380.38

Finding the Fourth Proportional to 1,246.06, 1,869.11 and 380.38

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Solution

The fourth proportional to 1,246.06, 1,869.11 and 380.38 is: 570.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.06 : 1,869.11 = 380.38 : x
  2. Step 2: Convert to fraction form
    1,246.06/1,869.11 = 380.38/x
  3. Step 3: Cross multiply
    1,246.06x = 1,869.11 × 380.38
  4. Step 4: Simplify right side
    1,246.06x = 710,972.06
  5. Step 5: Solve for x
    x = 710,972.06/1,246.06
  6. Step 6: Final answer
    x = 570.58

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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.