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Finding the Fourth Proportional to 3,381.58, 5,071.72 and 1,040.96

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Solution

The fourth proportional to 3,381.58, 5,071.72 and 1,040.96 is: 1,561.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.58 : 5,071.72 = 1,040.96 : x
  2. Step 2: Convert to fraction form
    3,381.58/5,071.72 = 1,040.96/x
  3. Step 3: Cross multiply
    3,381.58x = 5,071.72 × 1,040.96
  4. Step 4: Simplify right side
    3,381.58x = 5,279,457.65
  5. Step 5: Solve for x
    x = 5,279,457.65/3,381.58
  6. Step 6: Final answer
    x = 1,561.24

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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.