Home / 3,921.23-5,411.30-2,152.95

Finding the Fourth Proportional to 3,921.23, 5,411.30 and 2,152.95

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Solution

The fourth proportional to 3,921.23, 5,411.30 and 2,152.95 is: 2,971.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.23 : 5,411.30 = 2,152.95 : x
  2. Step 2: Convert to fraction form
    3,921.23/5,411.30 = 2,152.95/x
  3. Step 3: Cross multiply
    3,921.23x = 5,411.30 × 2,152.95
  4. Step 4: Simplify right side
    3,921.23x = 11,650,260.66
  5. Step 5: Solve for x
    x = 11,650,260.66/3,921.23
  6. Step 6: Final answer
    x = 2,971.07

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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.