Home / 3,807.89-5,255.01-2,106.42

Finding the Fourth Proportional to 3,807.89, 5,255.01 and 2,106.42

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Solution

The fourth proportional to 3,807.89, 5,255.01 and 2,106.42 is: 2,906.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.89 : 5,255.01 = 2,106.42 : x
  2. Step 2: Convert to fraction form
    3,807.89/5,255.01 = 2,106.42/x
  3. Step 3: Cross multiply
    3,807.89x = 5,255.01 × 2,106.42
  4. Step 4: Simplify right side
    3,807.89x = 11,069,221.36
  5. Step 5: Solve for x
    x = 11,069,221.36/3,807.89
  6. Step 6: Final answer
    x = 2,906.92

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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.