Home / 1,521.23-2,099.31-883.30

Finding the Fourth Proportional to 1,521.23, 2,099.31 and 883.30

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Solution

The fourth proportional to 1,521.23, 2,099.31 and 883.30 is: 1,218.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.23 : 2,099.31 = 883.30 : x
  2. Step 2: Convert to fraction form
    1,521.23/2,099.31 = 883.30/x
  3. Step 3: Cross multiply
    1,521.23x = 2,099.31 × 883.30
  4. Step 4: Simplify right side
    1,521.23x = 1,854,305.61
  5. Step 5: Solve for x
    x = 1,854,305.61/1,521.23
  6. Step 6: Final answer
    x = 1,218.95

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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.