Home / 3,458.60-5,178.65-1,811.68

Finding the Fourth Proportional to 3,458.60, 5,178.65 and 1,811.68

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Solution

The fourth proportional to 3,458.60, 5,178.65 and 1,811.68 is: 2,712.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,458.60 : 5,178.65 = 1,811.68 : x
  2. Step 2: Convert to fraction form
    3,458.60/5,178.65 = 1,811.68/x
  3. Step 3: Cross multiply
    3,458.60x = 5,178.65 × 1,811.68
  4. Step 4: Simplify right side
    3,458.60x = 9,382,073.95
  5. Step 5: Solve for x
    x = 9,382,073.95/3,458.60
  6. Step 6: Final answer
    x = 2,712.68

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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.