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Finding the Fourth Proportional to 7,775.38, 11,648.49 and 5,696.11

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Solution

The fourth proportional to 7,775.38, 11,648.49 and 5,696.11 is: 8,533.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.38 : 11,648.49 = 5,696.11 : x
  2. Step 2: Convert to fraction form
    7,775.38/11,648.49 = 5,696.11/x
  3. Step 3: Cross multiply
    7,775.38x = 11,648.49 × 5,696.11
  4. Step 4: Simplify right side
    7,775.38x = 66,351,080.37
  5. Step 5: Solve for x
    x = 66,351,080.37/7,775.38
  6. Step 6: Final answer
    x = 8,533.48

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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.