Home / 2,140.16-3,217.56-1,979.84

Finding the Fourth Proportional to 2,140.16, 3,217.56 and 1,979.84

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Solution

The fourth proportional to 2,140.16, 3,217.56 and 1,979.84 is: 2,976.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.16 : 3,217.56 = 1,979.84 : x
  2. Step 2: Convert to fraction form
    2,140.16/3,217.56 = 1,979.84/x
  3. Step 3: Cross multiply
    2,140.16x = 3,217.56 × 1,979.84
  4. Step 4: Simplify right side
    2,140.16x = 6,370,253.99
  5. Step 5: Solve for x
    x = 6,370,253.99/2,140.16
  6. Step 6: Final answer
    x = 2,976.53

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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.