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Finding the Fourth Proportional to 3,478.39, 4,800.08 and 1,986.27

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Solution

The fourth proportional to 3,478.39, 4,800.08 and 1,986.27 is: 2,740.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.39 : 4,800.08 = 1,986.27 : x
  2. Step 2: Convert to fraction form
    3,478.39/4,800.08 = 1,986.27/x
  3. Step 3: Cross multiply
    3,478.39x = 4,800.08 × 1,986.27
  4. Step 4: Simplify right side
    3,478.39x = 9,534,220.97
  5. Step 5: Solve for x
    x = 9,534,220.97/3,478.39
  6. Step 6: Final answer
    x = 2,740.99

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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.