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Finding the Fourth Proportional to 5,913.50, 8,862 and 2,988.39

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Solution

The fourth proportional to 5,913.50, 8,862 and 2,988.39 is: 4,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,913.50 : 8,862 = 2,988.39 : x
  2. Step 2: Convert to fraction form
    5,913.50/8,862 = 2,988.39/x
  3. Step 3: Cross multiply
    5,913.50x = 8,862 × 2,988.39
  4. Step 4: Simplify right side
    5,913.50x = 26,483,112.18
  5. Step 5: Solve for x
    x = 26,483,112.18/5,913.50
  6. Step 6: Final answer
    x = 4,478.42

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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.