Home / 4,015.90-6,021.15-2,142.10

Finding the Fourth Proportional to 4,015.90, 6,021.15 and 2,142.10

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Solution

The fourth proportional to 4,015.90, 6,021.15 and 2,142.10 is: 3,211.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,015.90 : 6,021.15 = 2,142.10 : x
  2. Step 2: Convert to fraction form
    4,015.90/6,021.15 = 2,142.10/x
  3. Step 3: Cross multiply
    4,015.90x = 6,021.15 × 2,142.10
  4. Step 4: Simplify right side
    4,015.90x = 12,897,905.42
  5. Step 5: Solve for x
    x = 12,897,905.42/4,015.90
  6. Step 6: Final answer
    x = 3,211.71

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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.