Home / 3,486.25-5,229.63-1,145.65

Finding the Fourth Proportional to 3,486.25, 5,229.63 and 1,145.65

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Solution

The fourth proportional to 3,486.25, 5,229.63 and 1,145.65 is: 1,718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.25 : 5,229.63 = 1,145.65 : x
  2. Step 2: Convert to fraction form
    3,486.25/5,229.63 = 1,145.65/x
  3. Step 3: Cross multiply
    3,486.25x = 5,229.63 × 1,145.65
  4. Step 4: Simplify right side
    3,486.25x = 5,991,325.61
  5. Step 5: Solve for x
    x = 5,991,325.61/3,486.25
  6. Step 6: Final answer
    x = 1,718.56

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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.