Home / 3,156.42-4,355.16-2,161.46

Finding the Fourth Proportional to 3,156.42, 4,355.16 and 2,161.46

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Solution

The fourth proportional to 3,156.42, 4,355.16 and 2,161.46 is: 2,982.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.42 : 4,355.16 = 2,161.46 : x
  2. Step 2: Convert to fraction form
    3,156.42/4,355.16 = 2,161.46/x
  3. Step 3: Cross multiply
    3,156.42x = 4,355.16 × 2,161.46
  4. Step 4: Simplify right side
    3,156.42x = 9,413,504.13
  5. Step 5: Solve for x
    x = 9,413,504.13/3,156.42
  6. Step 6: Final answer
    x = 2,982.34

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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.