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Finding the Fourth Proportional to 5,321.76, 7,975.32 and 3,370.50

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Solution

The fourth proportional to 5,321.76, 7,975.32 and 3,370.50 is: 5,051.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.76 : 7,975.32 = 3,370.50 : x
  2. Step 2: Convert to fraction form
    5,321.76/7,975.32 = 3,370.50/x
  3. Step 3: Cross multiply
    5,321.76x = 7,975.32 × 3,370.50
  4. Step 4: Simplify right side
    5,321.76x = 26,880,816.06
  5. Step 5: Solve for x
    x = 26,880,816.06/5,321.76
  6. Step 6: Final answer
    x = 5,051.11

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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.