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Finding the Fourth Proportional to 2,850.39, 4,275.74 and 902.45

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Solution

The fourth proportional to 2,850.39, 4,275.74 and 902.45 is: 1,353.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.39 : 4,275.74 = 902.45 : x
  2. Step 2: Convert to fraction form
    2,850.39/4,275.74 = 902.45/x
  3. Step 3: Cross multiply
    2,850.39x = 4,275.74 × 902.45
  4. Step 4: Simplify right side
    2,850.39x = 3,858,615.67
  5. Step 5: Solve for x
    x = 3,858,615.67/2,850.39
  6. Step 6: Final answer
    x = 1,353.71

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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.