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Finding the Fourth Proportional to 5,286.56, 7,295.56 and 2,928.92

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Solution

The fourth proportional to 5,286.56, 7,295.56 and 2,928.92 is: 4,041.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.56 : 7,295.56 = 2,928.92 : x
  2. Step 2: Convert to fraction form
    5,286.56/7,295.56 = 2,928.92/x
  3. Step 3: Cross multiply
    5,286.56x = 7,295.56 × 2,928.92
  4. Step 4: Simplify right side
    5,286.56x = 21,368,111.60
  5. Step 5: Solve for x
    x = 21,368,111.60/5,286.56
  6. Step 6: Final answer
    x = 4,041.97

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Double scale
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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.