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Finding the Fourth Proportional to 3,998.44, 5,510.05 and 2,877.40

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Solution

The fourth proportional to 3,998.44, 5,510.05 and 2,877.40 is: 3,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.44 : 5,510.05 = 2,877.40 : x
  2. Step 2: Convert to fraction form
    3,998.44/5,510.05 = 2,877.40/x
  3. Step 3: Cross multiply
    3,998.44x = 5,510.05 × 2,877.40
  4. Step 4: Simplify right side
    3,998.44x = 15,854,617.87
  5. Step 5: Solve for x
    x = 15,854,617.87/3,998.44
  6. Step 6: Final answer
    x = 3,965.20

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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.