Home / 3,551.68-4,901.34-1,979.80

Finding the Fourth Proportional to 3,551.68, 4,901.34 and 1,979.80

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Solution

The fourth proportional to 3,551.68, 4,901.34 and 1,979.80 is: 2,732.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.68 : 4,901.34 = 1,979.80 : x
  2. Step 2: Convert to fraction form
    3,551.68/4,901.34 = 1,979.80/x
  3. Step 3: Cross multiply
    3,551.68x = 4,901.34 × 1,979.80
  4. Step 4: Simplify right side
    3,551.68x = 9,703,672.93
  5. Step 5: Solve for x
    x = 9,703,672.93/3,551.68
  6. Step 6: Final answer
    x = 2,732.14

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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.