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Finding the Fourth Proportional to 7,162.20, 9,900.36 and 5,976.36

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Solution

The fourth proportional to 7,162.20, 9,900.36 and 5,976.36 is: 8,261.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,162.20 : 9,900.36 = 5,976.36 : x
  2. Step 2: Convert to fraction form
    7,162.20/9,900.36 = 5,976.36/x
  3. Step 3: Cross multiply
    7,162.20x = 9,900.36 × 5,976.36
  4. Step 4: Simplify right side
    7,162.20x = 59,168,115.49
  5. Step 5: Solve for x
    x = 59,168,115.49/7,162.20
  6. Step 6: Final answer
    x = 8,261.16

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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.