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Finding the Fourth Proportional to 2,452.07, 3,678.91 and 786.45

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Solution

The fourth proportional to 2,452.07, 3,678.91 and 786.45 is: 1,179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,452.07 : 3,678.91 = 786.45 : x
  2. Step 2: Convert to fraction form
    2,452.07/3,678.91 = 786.45/x
  3. Step 3: Cross multiply
    2,452.07x = 3,678.91 × 786.45
  4. Step 4: Simplify right side
    2,452.07x = 2,893,274.84
  5. Step 5: Solve for x
    x = 2,893,274.84/2,452.07
  6. Step 6: Final answer
    x = 1,179.93

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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.