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Finding the Fourth Proportional to 7,281.66, 10,928.97 and 3,388.26

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Solution

The fourth proportional to 7,281.66, 10,928.97 and 3,388.26 is: 5,085.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.66 : 10,928.97 = 3,388.26 : x
  2. Step 2: Convert to fraction form
    7,281.66/10,928.97 = 3,388.26/x
  3. Step 3: Cross multiply
    7,281.66x = 10,928.97 × 3,388.26
  4. Step 4: Simplify right side
    7,281.66x = 37,030,191.89
  5. Step 5: Solve for x
    x = 37,030,191.89/7,281.66
  6. Step 6: Final answer
    x = 5,085.41

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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.