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Finding the Fourth Proportional to 7,616.63, 10,512.17 and 4,472.21

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Solution

The fourth proportional to 7,616.63, 10,512.17 and 4,472.21 is: 6,172.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,616.63 : 10,512.17 = 4,472.21 : x
  2. Step 2: Convert to fraction form
    7,616.63/10,512.17 = 4,472.21/x
  3. Step 3: Cross multiply
    7,616.63x = 10,512.17 × 4,472.21
  4. Step 4: Simplify right side
    7,616.63x = 47,012,556.87
  5. Step 5: Solve for x
    x = 47,012,556.87/7,616.63
  6. Step 6: Final answer
    x = 6,172.36

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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.