Home / 1,675.31-2,311.92-929.35

Finding the Fourth Proportional to 1,675.31, 2,311.92 and 929.35

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Solution

The fourth proportional to 1,675.31, 2,311.92 and 929.35 is: 1,282.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.31 : 2,311.92 = 929.35 : x
  2. Step 2: Convert to fraction form
    1,675.31/2,311.92 = 929.35/x
  3. Step 3: Cross multiply
    1,675.31x = 2,311.92 × 929.35
  4. Step 4: Simplify right side
    1,675.31x = 2,148,571.29
  5. Step 5: Solve for x
    x = 2,148,571.29/1,675.31
  6. Step 6: Final answer
    x = 1,282.49

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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.