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Finding the Fourth Proportional to 3,479.05, 4,800.31 and 1,986.49

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Solution

The fourth proportional to 3,479.05, 4,800.31 and 1,986.49 is: 2,740.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.05 : 4,800.31 = 1,986.49 : x
  2. Step 2: Convert to fraction form
    3,479.05/4,800.31 = 1,986.49/x
  3. Step 3: Cross multiply
    3,479.05x = 4,800.31 × 1,986.49
  4. Step 4: Simplify right side
    3,479.05x = 9,535,780.02
  5. Step 5: Solve for x
    x = 9,535,780.02/3,479.05
  6. Step 6: Final answer
    x = 2,740.91

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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.