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Finding the Fourth Proportional to 7,292.25, 10,063.31 and 3,980.25

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Solution

The fourth proportional to 7,292.25, 10,063.31 and 3,980.25 is: 5,492.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,292.25 : 10,063.31 = 3,980.25 : x
  2. Step 2: Convert to fraction form
    7,292.25/10,063.31 = 3,980.25/x
  3. Step 3: Cross multiply
    7,292.25x = 10,063.31 × 3,980.25
  4. Step 4: Simplify right side
    7,292.25x = 40,054,469.73
  5. Step 5: Solve for x
    x = 40,054,469.73/7,292.25
  6. Step 6: Final answer
    x = 5,492.75

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1.5x scale

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.