Home / 3,679.86-5,076.30-2,166.36

Finding the Fourth Proportional to 3,679.86, 5,076.30 and 2,166.36

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Solution

The fourth proportional to 3,679.86, 5,076.30 and 2,166.36 is: 2,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.86 : 5,076.30 = 2,166.36 : x
  2. Step 2: Convert to fraction form
    3,679.86/5,076.30 = 2,166.36/x
  3. Step 3: Cross multiply
    3,679.86x = 5,076.30 × 2,166.36
  4. Step 4: Simplify right side
    3,679.86x = 10,997,093.27
  5. Step 5: Solve for x
    x = 10,997,093.27/3,679.86
  6. Step 6: Final answer
    x = 2,988.45

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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.