Home / 2,218.79-3,329.51-1,178.75

Finding the Fourth Proportional to 2,218.79, 3,329.51 and 1,178.75

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Solution

The fourth proportional to 2,218.79, 3,329.51 and 1,178.75 is: 1,768.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.79 : 3,329.51 = 1,178.75 : x
  2. Step 2: Convert to fraction form
    2,218.79/3,329.51 = 1,178.75/x
  3. Step 3: Cross multiply
    2,218.79x = 3,329.51 × 1,178.75
  4. Step 4: Simplify right side
    2,218.79x = 3,924,662.34
  5. Step 5: Solve for x
    x = 3,924,662.34/2,218.79
  6. Step 6: Final answer
    x = 1,768.83

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1.5x scale

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.