Home / 2,454.92-3,678.80-1,139.07

Finding the Fourth Proportional to 2,454.92, 3,678.80 and 1,139.07

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Solution

The fourth proportional to 2,454.92, 3,678.80 and 1,139.07 is: 1,706.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,454.92 : 3,678.80 = 1,139.07 : x
  2. Step 2: Convert to fraction form
    2,454.92/3,678.80 = 1,139.07/x
  3. Step 3: Cross multiply
    2,454.92x = 3,678.80 × 1,139.07
  4. Step 4: Simplify right side
    2,454.92x = 4,190,410.72
  5. Step 5: Solve for x
    x = 4,190,410.72/2,454.92
  6. Step 6: Final answer
    x = 1,706.94

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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.