Home / 3,991.86-5,508.60-2,223.48

Finding the Fourth Proportional to 3,991.86, 5,508.60 and 2,223.48

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Solution

The fourth proportional to 3,991.86, 5,508.60 and 2,223.48 is: 3,068.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.86 : 5,508.60 = 2,223.48 : x
  2. Step 2: Convert to fraction form
    3,991.86/5,508.60 = 2,223.48/x
  3. Step 3: Cross multiply
    3,991.86x = 5,508.60 × 2,223.48
  4. Step 4: Simplify right side
    3,991.86x = 12,248,261.93
  5. Step 5: Solve for x
    x = 12,248,261.93/3,991.86
  6. Step 6: Final answer
    x = 3,068.31

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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.