Home / 3,911.72-5,398.70-2,232.74

Finding the Fourth Proportional to 3,911.72, 5,398.70 and 2,232.74

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Solution

The fourth proportional to 3,911.72, 5,398.70 and 2,232.74 is: 3,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.72 : 5,398.70 = 2,232.74 : x
  2. Step 2: Convert to fraction form
    3,911.72/5,398.70 = 2,232.74/x
  3. Step 3: Cross multiply
    3,911.72x = 5,398.70 × 2,232.74
  4. Step 4: Simplify right side
    3,911.72x = 12,053,895.77
  5. Step 5: Solve for x
    x = 12,053,895.77/3,911.72
  6. Step 6: Final answer
    x = 3,081.49

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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.