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Finding the Fourth Proportional to 3,513.82, 4,849.10 and 1,920.55

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Solution

The fourth proportional to 3,513.82, 4,849.10 and 1,920.55 is: 2,650.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,513.82 : 4,849.10 = 1,920.55 : x
  2. Step 2: Convert to fraction form
    3,513.82/4,849.10 = 1,920.55/x
  3. Step 3: Cross multiply
    3,513.82x = 4,849.10 × 1,920.55
  4. Step 4: Simplify right side
    3,513.82x = 9,312,939.01
  5. Step 5: Solve for x
    x = 9,312,939.01/3,513.82
  6. Step 6: Final answer
    x = 2,650.37

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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.