Home / 7,569.78-11,356.19-2,638.09

Finding the Fourth Proportional to 7,569.78, 11,356.19 and 2,638.09

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Solution

The fourth proportional to 7,569.78, 11,356.19 and 2,638.09 is: 3,957.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,569.78 : 11,356.19 = 2,638.09 : x
  2. Step 2: Convert to fraction form
    7,569.78/11,356.19 = 2,638.09/x
  3. Step 3: Cross multiply
    7,569.78x = 11,356.19 × 2,638.09
  4. Step 4: Simplify right side
    7,569.78x = 29,958,651.28
  5. Step 5: Solve for x
    x = 29,958,651.28/7,569.78
  6. Step 6: Final answer
    x = 3,957.66

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1.5x scale

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.