Home / 2,478.32-3,717.75-918.14

Finding the Fourth Proportional to 2,478.32, 3,717.75 and 918.14

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Solution

The fourth proportional to 2,478.32, 3,717.75 and 918.14 is: 1,377.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.32 : 3,717.75 = 918.14 : x
  2. Step 2: Convert to fraction form
    2,478.32/3,717.75 = 918.14/x
  3. Step 3: Cross multiply
    2,478.32x = 3,717.75 × 918.14
  4. Step 4: Simplify right side
    2,478.32x = 3,413,414.99
  5. Step 5: Solve for x
    x = 3,413,414.99/2,478.32
  6. Step 6: Final answer
    x = 1,377.31

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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.