Home / 7,110.78-9,812.79-3,967.50

Finding the Fourth Proportional to 7,110.78, 9,812.79 and 3,967.50

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Solution

The fourth proportional to 7,110.78, 9,812.79 and 3,967.50 is: 5,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.78 : 9,812.79 = 3,967.50 : x
  2. Step 2: Convert to fraction form
    7,110.78/9,812.79 = 3,967.50/x
  3. Step 3: Cross multiply
    7,110.78x = 9,812.79 × 3,967.50
  4. Step 4: Simplify right side
    7,110.78x = 38,932,244.33
  5. Step 5: Solve for x
    x = 38,932,244.33/7,110.78
  6. Step 6: Final answer
    x = 5,475.10

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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.