Home / 5,312.25-7,969.32-2,190.52

Finding the Fourth Proportional to 5,312.25, 7,969.32 and 2,190.52

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Solution

The fourth proportional to 5,312.25, 7,969.32 and 2,190.52 is: 3,286.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.25 : 7,969.32 = 2,190.52 : x
  2. Step 2: Convert to fraction form
    5,312.25/7,969.32 = 2,190.52/x
  3. Step 3: Cross multiply
    5,312.25x = 7,969.32 × 2,190.52
  4. Step 4: Simplify right side
    5,312.25x = 17,456,954.85
  5. Step 5: Solve for x
    x = 17,456,954.85/5,312.25
  6. Step 6: Final answer
    x = 3,286.17

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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.