Home / 2,108.20-2,906.40-1,516.90

Finding the Fourth Proportional to 2,108.20, 2,906.40 and 1,516.90

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Solution

The fourth proportional to 2,108.20, 2,906.40 and 1,516.90 is: 2,091.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.20 : 2,906.40 = 1,516.90 : x
  2. Step 2: Convert to fraction form
    2,108.20/2,906.40 = 1,516.90/x
  3. Step 3: Cross multiply
    2,108.20x = 2,906.40 × 1,516.90
  4. Step 4: Simplify right side
    2,108.20x = 4,408,718.16
  5. Step 5: Solve for x
    x = 4,408,718.16/2,108.20
  6. Step 6: Final answer
    x = 2,091.22

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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.