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Finding the Fourth Proportional to 2,850.79, 3,933.97 and 1,655.80

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Solution

The fourth proportional to 2,850.79, 3,933.97 and 1,655.80 is: 2,284.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.79 : 3,933.97 = 1,655.80 : x
  2. Step 2: Convert to fraction form
    2,850.79/3,933.97 = 1,655.80/x
  3. Step 3: Cross multiply
    2,850.79x = 3,933.97 × 1,655.80
  4. Step 4: Simplify right side
    2,850.79x = 6,513,867.53
  5. Step 5: Solve for x
    x = 6,513,867.53/2,850.79
  6. Step 6: Final answer
    x = 2,284.93

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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.