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Finding the Fourth Proportional to 7,893.78, 10,882.38 and 5,240.22

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Solution

The fourth proportional to 7,893.78, 10,882.38 and 5,240.22 is: 7,224.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.78 : 10,882.38 = 5,240.22 : x
  2. Step 2: Convert to fraction form
    7,893.78/10,882.38 = 5,240.22/x
  3. Step 3: Cross multiply
    7,893.78x = 10,882.38 × 5,240.22
  4. Step 4: Simplify right side
    7,893.78x = 57,026,065.32
  5. Step 5: Solve for x
    x = 57,026,065.32/7,893.78
  6. Step 6: Final answer
    x = 7,224.18

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.