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Finding the Fourth Proportional to 2,373.75, 3,558.25 and 812.69

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Solution

The fourth proportional to 2,373.75, 3,558.25 and 812.69 is: 1,218.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,373.75 : 3,558.25 = 812.69 : x
  2. Step 2: Convert to fraction form
    2,373.75/3,558.25 = 812.69/x
  3. Step 3: Cross multiply
    2,373.75x = 3,558.25 × 812.69
  4. Step 4: Simplify right side
    2,373.75x = 2,891,754.19
  5. Step 5: Solve for x
    x = 2,891,754.19/2,373.75
  6. Step 6: Final answer
    x = 1,218.22

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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.