Home / 1,353.23-2,029.46-858.90

Finding the Fourth Proportional to 1,353.23, 2,029.46 and 858.90

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Solution

The fourth proportional to 1,353.23, 2,029.46 and 858.90 is: 1,288.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.23 : 2,029.46 = 858.90 : x
  2. Step 2: Convert to fraction form
    1,353.23/2,029.46 = 858.90/x
  3. Step 3: Cross multiply
    1,353.23x = 2,029.46 × 858.90
  4. Step 4: Simplify right side
    1,353.23x = 1,743,098.90
  5. Step 5: Solve for x
    x = 1,743,098.90/1,353.23
  6. Step 6: Final answer
    x = 1,288.11

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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.