Home / 4,990.69-6,887.07-2,752.78

Finding the Fourth Proportional to 4,990.69, 6,887.07 and 2,752.78

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Solution

The fourth proportional to 4,990.69, 6,887.07 and 2,752.78 is: 3,798.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.69 : 6,887.07 = 2,752.78 : x
  2. Step 2: Convert to fraction form
    4,990.69/6,887.07 = 2,752.78/x
  3. Step 3: Cross multiply
    4,990.69x = 6,887.07 × 2,752.78
  4. Step 4: Simplify right side
    4,990.69x = 18,958,588.55
  5. Step 5: Solve for x
    x = 18,958,588.55/4,990.69
  6. Step 6: Final answer
    x = 3,798.79

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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.