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Finding the Fourth Proportional to 7,048.87, 9,727.41 and 3,905.05

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Solution

The fourth proportional to 7,048.87, 9,727.41 and 3,905.05 is: 5,388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.87 : 9,727.41 = 3,905.05 : x
  2. Step 2: Convert to fraction form
    7,048.87/9,727.41 = 3,905.05/x
  3. Step 3: Cross multiply
    7,048.87x = 9,727.41 × 3,905.05
  4. Step 4: Simplify right side
    7,048.87x = 37,986,022.42
  5. Step 5: Solve for x
    x = 37,986,022.42/7,048.87
  6. Step 6: Final answer
    x = 5,388.95

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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.