Home / 3,781.96-5,666.86-2,133.61

Finding the Fourth Proportional to 3,781.96, 5,666.86 and 2,133.61

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Solution

The fourth proportional to 3,781.96, 5,666.86 and 2,133.61 is: 3,196.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.96 : 5,666.86 = 2,133.61 : x
  2. Step 2: Convert to fraction form
    3,781.96/5,666.86 = 2,133.61/x
  3. Step 3: Cross multiply
    3,781.96x = 5,666.86 × 2,133.61
  4. Step 4: Simplify right side
    3,781.96x = 12,090,869.16
  5. Step 5: Solve for x
    x = 12,090,869.16/3,781.96
  6. Step 6: Final answer
    x = 3,196.98

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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.