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Finding the Fourth Proportional to 7,150.77, 9,867.88 and 4,007.16

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Solution

The fourth proportional to 7,150.77, 9,867.88 and 4,007.16 is: 5,529.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,150.77 : 9,867.88 = 4,007.16 : x
  2. Step 2: Convert to fraction form
    7,150.77/9,867.88 = 4,007.16/x
  3. Step 3: Cross multiply
    7,150.77x = 9,867.88 × 4,007.16
  4. Step 4: Simplify right side
    7,150.77x = 39,542,174.02
  5. Step 5: Solve for x
    x = 39,542,174.02/7,150.77
  6. Step 6: Final answer
    x = 5,529.78

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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.