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Finding the Fourth Proportional to 3,520.37, 4,857.89 and 1,948.49

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Solution

The fourth proportional to 3,520.37, 4,857.89 and 1,948.49 is: 2,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.37 : 4,857.89 = 1,948.49 : x
  2. Step 2: Convert to fraction form
    3,520.37/4,857.89 = 1,948.49/x
  3. Step 3: Cross multiply
    3,520.37x = 4,857.89 × 1,948.49
  4. Step 4: Simplify right side
    3,520.37x = 9,465,552.49
  5. Step 5: Solve for x
    x = 9,465,552.49/3,520.37
  6. Step 6: Final answer
    x = 2,688.80

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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.