Home / 3,553.71-5,331.96-1,909.80

Finding the Fourth Proportional to 3,553.71, 5,331.96 and 1,909.80

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Solution

The fourth proportional to 3,553.71, 5,331.96 and 1,909.80 is: 2,865.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,553.71 : 5,331.96 = 1,909.80 : x
  2. Step 2: Convert to fraction form
    3,553.71/5,331.96 = 1,909.80/x
  3. Step 3: Cross multiply
    3,553.71x = 5,331.96 × 1,909.80
  4. Step 4: Simplify right side
    3,553.71x = 10,182,977.21
  5. Step 5: Solve for x
    x = 10,182,977.21/3,553.71
  6. Step 6: Final answer
    x = 2,865.45

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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.