Home / 7,175.32-9,901.94-3,988.52

Finding the Fourth Proportional to 7,175.32, 9,901.94 and 3,988.52

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Solution

The fourth proportional to 7,175.32, 9,901.94 and 3,988.52 is: 5,504.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.32 : 9,901.94 = 3,988.52 : x
  2. Step 2: Convert to fraction form
    7,175.32/9,901.94 = 3,988.52/x
  3. Step 3: Cross multiply
    7,175.32x = 9,901.94 × 3,988.52
  4. Step 4: Simplify right side
    7,175.32x = 39,494,065.79
  5. Step 5: Solve for x
    x = 39,494,065.79/7,175.32
  6. Step 6: Final answer
    x = 5,504.15

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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.