Home / 2,921.36-4,382.76-1,382

Finding the Fourth Proportional to 2,921.36, 4,382.76 and 1,382

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Solution

The fourth proportional to 2,921.36, 4,382.76 and 1,382 is: 2,073.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.36 : 4,382.76 = 1,382 : x
  2. Step 2: Convert to fraction form
    2,921.36/4,382.76 = 1,382/x
  3. Step 3: Cross multiply
    2,921.36x = 4,382.76 × 1,382
  4. Step 4: Simplify right side
    2,921.36x = 6,056,974.32
  5. Step 5: Solve for x
    x = 6,056,974.32/2,921.36
  6. Step 6: Final answer
    x = 2,073.34

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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.