Home / 3,486.90-5,229.92-1,178.40

Finding the Fourth Proportional to 3,486.90, 5,229.92 and 1,178.40

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Solution

The fourth proportional to 3,486.90, 5,229.92 and 1,178.40 is: 1,767.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.90 : 5,229.92 = 1,178.40 : x
  2. Step 2: Convert to fraction form
    3,486.90/5,229.92 = 1,178.40/x
  3. Step 3: Cross multiply
    3,486.90x = 5,229.92 × 1,178.40
  4. Step 4: Simplify right side
    3,486.90x = 6,162,937.73
  5. Step 5: Solve for x
    x = 6,162,937.73/3,486.90
  6. Step 6: Final answer
    x = 1,767.45

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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.