Home / 2,100.14-3,149.42-618.96

Finding the Fourth Proportional to 2,100.14, 3,149.42 and 618.96

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Solution

The fourth proportional to 2,100.14, 3,149.42 and 618.96 is: 928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100.14 : 3,149.42 = 618.96 : x
  2. Step 2: Convert to fraction form
    2,100.14/3,149.42 = 618.96/x
  3. Step 3: Cross multiply
    2,100.14x = 3,149.42 × 618.96
  4. Step 4: Simplify right side
    2,100.14x = 1,949,346.16
  5. Step 5: Solve for x
    x = 1,949,346.16/2,100.14
  6. Step 6: Final answer
    x = 928.20

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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.