Home / 3,979.68-5,970.96-1,669.92

Finding the Fourth Proportional to 3,979.68, 5,970.96 and 1,669.92

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Solution

The fourth proportional to 3,979.68, 5,970.96 and 1,669.92 is: 2,505.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.68 : 5,970.96 = 1,669.92 : x
  2. Step 2: Convert to fraction form
    3,979.68/5,970.96 = 1,669.92/x
  3. Step 3: Cross multiply
    3,979.68x = 5,970.96 × 1,669.92
  4. Step 4: Simplify right side
    3,979.68x = 9,971,025.52
  5. Step 5: Solve for x
    x = 9,971,025.52/3,979.68
  6. Step 6: Final answer
    x = 2,505.48

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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.