Home / 3,985.41-5,499.39-2,306.55

Finding the Fourth Proportional to 3,985.41, 5,499.39 and 2,306.55

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Solution

The fourth proportional to 3,985.41, 5,499.39 and 2,306.55 is: 3,182.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.41 : 5,499.39 = 2,306.55 : x
  2. Step 2: Convert to fraction form
    3,985.41/5,499.39 = 2,306.55/x
  3. Step 3: Cross multiply
    3,985.41x = 5,499.39 × 2,306.55
  4. Step 4: Simplify right side
    3,985.41x = 12,684,618.00
  5. Step 5: Solve for x
    x = 12,684,618.00/3,985.41
  6. Step 6: Final answer
    x = 3,182.76

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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.