Home / 2,231.45-3,345.92-916.11

Finding the Fourth Proportional to 2,231.45, 3,345.92 and 916.11

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Solution

The fourth proportional to 2,231.45, 3,345.92 and 916.11 is: 1,373.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.45 : 3,345.92 = 916.11 : x
  2. Step 2: Convert to fraction form
    2,231.45/3,345.92 = 916.11/x
  3. Step 3: Cross multiply
    2,231.45x = 3,345.92 × 916.11
  4. Step 4: Simplify right side
    2,231.45x = 3,065,226.19
  5. Step 5: Solve for x
    x = 3,065,226.19/2,231.45
  6. Step 6: Final answer
    x = 1,373.65

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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.