Home / 3,411.85-5,117.25-2,187.81

Finding the Fourth Proportional to 3,411.85, 5,117.25 and 2,187.81

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Solution

The fourth proportional to 3,411.85, 5,117.25 and 2,187.81 is: 3,281.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.85 : 5,117.25 = 2,187.81 : x
  2. Step 2: Convert to fraction form
    3,411.85/5,117.25 = 2,187.81/x
  3. Step 3: Cross multiply
    3,411.85x = 5,117.25 × 2,187.81
  4. Step 4: Simplify right side
    3,411.85x = 11,195,570.72
  5. Step 5: Solve for x
    x = 11,195,570.72/3,411.85
  6. Step 6: Final answer
    x = 3,281.38

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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.