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Finding the Fourth Proportional to 3,251.59, 4,878.21 and 1,866.49

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Solution

The fourth proportional to 3,251.59, 4,878.21 and 1,866.49 is: 2,800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.59 : 4,878.21 = 1,866.49 : x
  2. Step 2: Convert to fraction form
    3,251.59/4,878.21 = 1,866.49/x
  3. Step 3: Cross multiply
    3,251.59x = 4,878.21 × 1,866.49
  4. Step 4: Simplify right side
    3,251.59x = 9,105,130.18
  5. Step 5: Solve for x
    x = 9,105,130.18/3,251.59
  6. Step 6: Final answer
    x = 2,800.21

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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.