Home / 2,178.60-3,268.71-1,009.17

Finding the Fourth Proportional to 2,178.60, 3,268.71 and 1,009.17

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Solution

The fourth proportional to 2,178.60, 3,268.71 and 1,009.17 is: 1,514.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.60 : 3,268.71 = 1,009.17 : x
  2. Step 2: Convert to fraction form
    2,178.60/3,268.71 = 1,009.17/x
  3. Step 3: Cross multiply
    2,178.60x = 3,268.71 × 1,009.17
  4. Step 4: Simplify right side
    2,178.60x = 3,298,684.07
  5. Step 5: Solve for x
    x = 3,298,684.07/2,178.60
  6. Step 6: Final answer
    x = 1,514.13

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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.