Home / 3,780.86-5,217.64-2,102.30

Finding the Fourth Proportional to 3,780.86, 5,217.64 and 2,102.30

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Solution

The fourth proportional to 3,780.86, 5,217.64 and 2,102.30 is: 2,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.86 : 5,217.64 = 2,102.30 : x
  2. Step 2: Convert to fraction form
    3,780.86/5,217.64 = 2,102.30/x
  3. Step 3: Cross multiply
    3,780.86x = 5,217.64 × 2,102.30
  4. Step 4: Simplify right side
    3,780.86x = 10,969,044.57
  5. Step 5: Solve for x
    x = 10,969,044.57/3,780.86
  6. Step 6: Final answer
    x = 2,901.20

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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.