Home / 1,521.22-2,099.27-858.29

Finding the Fourth Proportional to 1,521.22, 2,099.27 and 858.29

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Solution

The fourth proportional to 1,521.22, 2,099.27 and 858.29 is: 1,184.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.22 : 2,099.27 = 858.29 : x
  2. Step 2: Convert to fraction form
    1,521.22/2,099.27 = 858.29/x
  3. Step 3: Cross multiply
    1,521.22x = 2,099.27 × 858.29
  4. Step 4: Simplify right side
    1,521.22x = 1,801,767.66
  5. Step 5: Solve for x
    x = 1,801,767.66/1,521.22
  6. Step 6: Final answer
    x = 1,184.42

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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.