Home / 3,999.83-5,521.28-3,146.87

Finding the Fourth Proportional to 3,999.83, 5,521.28 and 3,146.87

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Solution

The fourth proportional to 3,999.83, 5,521.28 and 3,146.87 is: 4,343.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.83 : 5,521.28 = 3,146.87 : x
  2. Step 2: Convert to fraction form
    3,999.83/5,521.28 = 3,146.87/x
  3. Step 3: Cross multiply
    3,999.83x = 5,521.28 × 3,146.87
  4. Step 4: Simplify right side
    3,999.83x = 17,374,750.39
  5. Step 5: Solve for x
    x = 17,374,750.39/3,999.83
  6. Step 6: Final answer
    x = 4,343.87

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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.