Home / 3,498.31-5,220.19-3,187.81

Finding the Fourth Proportional to 3,498.31, 5,220.19 and 3,187.81

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Solution

The fourth proportional to 3,498.31, 5,220.19 and 3,187.81 is: 4,756.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,498.31 : 5,220.19 = 3,187.81 : x
  2. Step 2: Convert to fraction form
    3,498.31/5,220.19 = 3,187.81/x
  3. Step 3: Cross multiply
    3,498.31x = 5,220.19 × 3,187.81
  4. Step 4: Simplify right side
    3,498.31x = 16,640,973.88
  5. Step 5: Solve for x
    x = 16,640,973.88/3,498.31
  6. Step 6: Final answer
    x = 4,756.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.