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Finding the Fourth Proportional to 2,991.87, 4,487.81 and 2,477.79

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Solution

The fourth proportional to 2,991.87, 4,487.81 and 2,477.79 is: 3,716.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.87 : 4,487.81 = 2,477.79 : x
  2. Step 2: Convert to fraction form
    2,991.87/4,487.81 = 2,477.79/x
  3. Step 3: Cross multiply
    2,991.87x = 4,487.81 × 2,477.79
  4. Step 4: Simplify right side
    2,991.87x = 11,119,838.35
  5. Step 5: Solve for x
    x = 11,119,838.35/2,991.87
  6. Step 6: Final answer
    x = 3,716.69

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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.