Home / 2,125.31-2,932.71-1,328.47

Finding the Fourth Proportional to 2,125.31, 2,932.71 and 1,328.47

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Solution

The fourth proportional to 2,125.31, 2,932.71 and 1,328.47 is: 1,833.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.31 : 2,932.71 = 1,328.47 : x
  2. Step 2: Convert to fraction form
    2,125.31/2,932.71 = 1,328.47/x
  3. Step 3: Cross multiply
    2,125.31x = 2,932.71 × 1,328.47
  4. Step 4: Simplify right side
    2,125.31x = 3,896,004.94
  5. Step 5: Solve for x
    x = 3,896,004.94/2,125.31
  6. Step 6: Final answer
    x = 1,833.15

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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.