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Finding the Fourth Proportional to 5,328.48, 7,981.20 and 3,375.84

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Solution

The fourth proportional to 5,328.48, 7,981.20 and 3,375.84 is: 5,056.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.48 : 7,981.20 = 3,375.84 : x
  2. Step 2: Convert to fraction form
    5,328.48/7,981.20 = 3,375.84/x
  3. Step 3: Cross multiply
    5,328.48x = 7,981.20 × 3,375.84
  4. Step 4: Simplify right side
    5,328.48x = 26,943,254.21
  5. Step 5: Solve for x
    x = 26,943,254.21/5,328.48
  6. Step 6: Final answer
    x = 5,056.46

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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.