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Finding the Fourth Proportional to 5,625.28, 7,760.28 and 3,636.48

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Solution

The fourth proportional to 5,625.28, 7,760.28 and 3,636.48 is: 5,016.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,625.28 : 7,760.28 = 3,636.48 : x
  2. Step 2: Convert to fraction form
    5,625.28/7,760.28 = 3,636.48/x
  3. Step 3: Cross multiply
    5,625.28x = 7,760.28 × 3,636.48
  4. Step 4: Simplify right side
    5,625.28x = 28,220,103.01
  5. Step 5: Solve for x
    x = 28,220,103.01/5,625.28
  6. Step 6: Final answer
    x = 5,016.66

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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.