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Finding the Fourth Proportional to 5,285.92, 7,294.61 and 2,928.08

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Solution

The fourth proportional to 5,285.92, 7,294.61 and 2,928.08 is: 4,040.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.92 : 7,294.61 = 2,928.08 : x
  2. Step 2: Convert to fraction form
    5,285.92/7,294.61 = 2,928.08/x
  3. Step 3: Cross multiply
    5,285.92x = 7,294.61 × 2,928.08
  4. Step 4: Simplify right side
    5,285.92x = 21,359,201.65
  5. Step 5: Solve for x
    x = 21,359,201.65/5,285.92
  6. Step 6: Final answer
    x = 4,040.77

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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.