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Finding the Fourth Proportional to 7,172.28, 10,763.28 and 3,476.16

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Solution

The fourth proportional to 7,172.28, 10,763.28 and 3,476.16 is: 5,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.28 : 10,763.28 = 3,476.16 : x
  2. Step 2: Convert to fraction form
    7,172.28/10,763.28 = 3,476.16/x
  3. Step 3: Cross multiply
    7,172.28x = 10,763.28 × 3,476.16
  4. Step 4: Simplify right side
    7,172.28x = 37,414,883.40
  5. Step 5: Solve for x
    x = 37,414,883.40/7,172.28
  6. Step 6: Final answer
    x = 5,216.60

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1.5x scale

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.