Home / 3,325.40-4,988.03-985.39

Finding the Fourth Proportional to 3,325.40, 4,988.03 and 985.39

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Solution

The fourth proportional to 3,325.40, 4,988.03 and 985.39 is: 1,478.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,325.40 : 4,988.03 = 985.39 : x
  2. Step 2: Convert to fraction form
    3,325.40/4,988.03 = 985.39/x
  3. Step 3: Cross multiply
    3,325.40x = 4,988.03 × 985.39
  4. Step 4: Simplify right side
    3,325.40x = 4,915,137.48
  5. Step 5: Solve for x
    x = 4,915,137.48/3,325.40
  6. Step 6: Final answer
    x = 1,478.06

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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.