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Finding the Fourth Proportional to 4,990.87, 6,887.43 and 2,752.71

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Solution

The fourth proportional to 4,990.87, 6,887.43 and 2,752.71 is: 3,798.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.87 : 6,887.43 = 2,752.71 : x
  2. Step 2: Convert to fraction form
    4,990.87/6,887.43 = 2,752.71/x
  3. Step 3: Cross multiply
    4,990.87x = 6,887.43 × 2,752.71
  4. Step 4: Simplify right side
    4,990.87x = 18,959,097.44
  5. Step 5: Solve for x
    x = 18,959,097.44/4,990.87
  6. Step 6: Final answer
    x = 3,798.76

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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.