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Finding the Fourth Proportional to 3,560.78, 4,908.12 and 2,813.42

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Solution

The fourth proportional to 3,560.78, 4,908.12 and 2,813.42 is: 3,877.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,560.78 : 4,908.12 = 2,813.42 : x
  2. Step 2: Convert to fraction form
    3,560.78/4,908.12 = 2,813.42/x
  3. Step 3: Cross multiply
    3,560.78x = 4,908.12 × 2,813.42
  4. Step 4: Simplify right side
    3,560.78x = 13,808,602.97
  5. Step 5: Solve for x
    x = 13,808,602.97/3,560.78
  6. Step 6: Final answer
    x = 3,877.97

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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.