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Finding the Fourth Proportional to 5,328.43, 7,981.71 and 2,988.34

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Solution

The fourth proportional to 5,328.43, 7,981.71 and 2,988.34 is: 4,476.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.43 : 7,981.71 = 2,988.34 : x
  2. Step 2: Convert to fraction form
    5,328.43/7,981.71 = 2,988.34/x
  3. Step 3: Cross multiply
    5,328.43x = 7,981.71 × 2,988.34
  4. Step 4: Simplify right side
    5,328.43x = 23,852,063.26
  5. Step 5: Solve for x
    x = 23,852,063.26/5,328.43
  6. Step 6: Final answer
    x = 4,476.38

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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.