Home / 3,705.10-5,557.65-3,121.90

Finding the Fourth Proportional to 3,705.10, 5,557.65 and 3,121.90

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Solution

The fourth proportional to 3,705.10, 5,557.65 and 3,121.90 is: 4,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.10 : 5,557.65 = 3,121.90 : x
  2. Step 2: Convert to fraction form
    3,705.10/5,557.65 = 3,121.90/x
  3. Step 3: Cross multiply
    3,705.10x = 5,557.65 × 3,121.90
  4. Step 4: Simplify right side
    3,705.10x = 17,350,427.54
  5. Step 5: Solve for x
    x = 17,350,427.54/3,705.10
  6. Step 6: Final answer
    x = 4,682.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.