Home / 3,458.71-5,187.30-1,118.92

Finding the Fourth Proportional to 3,458.71, 5,187.30 and 1,118.92

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Solution

The fourth proportional to 3,458.71, 5,187.30 and 1,118.92 is: 1,678.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,458.71 : 5,187.30 = 1,118.92 : x
  2. Step 2: Convert to fraction form
    3,458.71/5,187.30 = 1,118.92/x
  3. Step 3: Cross multiply
    3,458.71x = 5,187.30 × 1,118.92
  4. Step 4: Simplify right side
    3,458.71x = 5,804,173.72
  5. Step 5: Solve for x
    x = 5,804,173.72/3,458.71
  6. Step 6: Final answer
    x = 1,678.13

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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.