Home / 3,985.06-5,500.30-2,585.38

Finding the Fourth Proportional to 3,985.06, 5,500.30 and 2,585.38

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Solution

The fourth proportional to 3,985.06, 5,500.30 and 2,585.38 is: 3,568.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.06 : 5,500.30 = 2,585.38 : x
  2. Step 2: Convert to fraction form
    3,985.06/5,500.30 = 2,585.38/x
  3. Step 3: Cross multiply
    3,985.06x = 5,500.30 × 2,585.38
  4. Step 4: Simplify right side
    3,985.06x = 14,220,365.61
  5. Step 5: Solve for x
    x = 14,220,365.61/3,985.06
  6. Step 6: Final answer
    x = 3,568.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.