Home / 2,421.97-3,346.86-1,979.71

Finding the Fourth Proportional to 2,421.97, 3,346.86 and 1,979.71

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Solution

The fourth proportional to 2,421.97, 3,346.86 and 1,979.71 is: 2,735.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.97 : 3,346.86 = 1,979.71 : x
  2. Step 2: Convert to fraction form
    2,421.97/3,346.86 = 1,979.71/x
  3. Step 3: Cross multiply
    2,421.97x = 3,346.86 × 1,979.71
  4. Step 4: Simplify right side
    2,421.97x = 6,625,812.21
  5. Step 5: Solve for x
    x = 6,625,812.21/2,421.97
  6. Step 6: Final answer
    x = 2,735.71

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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.