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Finding the Fourth Proportional to 7,286.51, 10,928.57 and 2,605.79

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Solution

The fourth proportional to 7,286.51, 10,928.57 and 2,605.79 is: 3,908.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,286.51 : 10,928.57 = 2,605.79 : x
  2. Step 2: Convert to fraction form
    7,286.51/10,928.57 = 2,605.79/x
  3. Step 3: Cross multiply
    7,286.51x = 10,928.57 × 2,605.79
  4. Step 4: Simplify right side
    7,286.51x = 28,477,490.75
  5. Step 5: Solve for x
    x = 28,477,490.75/7,286.51
  6. Step 6: Final answer
    x = 3,908.25

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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.