Home / 2,140.08-3,210.12-680.27

Finding the Fourth Proportional to 2,140.08, 3,210.12 and 680.27

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Solution

The fourth proportional to 2,140.08, 3,210.12 and 680.27 is: 1,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.08 : 3,210.12 = 680.27 : x
  2. Step 2: Convert to fraction form
    2,140.08/3,210.12 = 680.27/x
  3. Step 3: Cross multiply
    2,140.08x = 3,210.12 × 680.27
  4. Step 4: Simplify right side
    2,140.08x = 2,183,732.28
  5. Step 5: Solve for x
    x = 2,183,732.28/2,140.08
  6. Step 6: Final answer
    x = 1,020.40

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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.