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Finding the Fourth Proportional to 2,610.78, 3,916.18 and 880.62

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Solution

The fourth proportional to 2,610.78, 3,916.18 and 880.62 is: 1,320.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,610.78 : 3,916.18 = 880.62 : x
  2. Step 2: Convert to fraction form
    2,610.78/3,916.18 = 880.62/x
  3. Step 3: Cross multiply
    2,610.78x = 3,916.18 × 880.62
  4. Step 4: Simplify right side
    2,610.78x = 3,448,666.43
  5. Step 5: Solve for x
    x = 3,448,666.43/2,610.78
  6. Step 6: Final answer
    x = 1,320.93

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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.