Home / 2,138.10-3,210.45-1,166.10

Finding the Fourth Proportional to 2,138.10, 3,210.45 and 1,166.10

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Solution

The fourth proportional to 2,138.10, 3,210.45 and 1,166.10 is: 1,750.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.10 : 3,210.45 = 1,166.10 : x
  2. Step 2: Convert to fraction form
    2,138.10/3,210.45 = 1,166.10/x
  3. Step 3: Cross multiply
    2,138.10x = 3,210.45 × 1,166.10
  4. Step 4: Simplify right side
    2,138.10x = 3,743,705.75
  5. Step 5: Solve for x
    x = 3,743,705.75/2,138.10
  6. Step 6: Final answer
    x = 1,750.95

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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.