Home / 7,134-9,844.95-3,990.20

Finding the Fourth Proportional to 7,134, 9,844.95 and 3,990.20

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Solution

The fourth proportional to 7,134, 9,844.95 and 3,990.20 is: 5,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,134 : 9,844.95 = 3,990.20 : x
  2. Step 2: Convert to fraction form
    7,134/9,844.95 = 3,990.20/x
  3. Step 3: Cross multiply
    7,134x = 9,844.95 × 3,990.20
  4. Step 4: Simplify right side
    7,134x = 39,283,270.27
  5. Step 5: Solve for x
    x = 39,283,270.27/7,134
  6. Step 6: Final answer
    x = 5,506.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.