Home / 3,780.77-5,217.30-2,102.13

Finding the Fourth Proportional to 3,780.77, 5,217.30 and 2,102.13

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Solution

The fourth proportional to 3,780.77, 5,217.30 and 2,102.13 is: 2,900.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.77 : 5,217.30 = 2,102.13 : x
  2. Step 2: Convert to fraction form
    3,780.77/5,217.30 = 2,102.13/x
  3. Step 3: Cross multiply
    3,780.77x = 5,217.30 × 2,102.13
  4. Step 4: Simplify right side
    3,780.77x = 10,967,442.85
  5. Step 5: Solve for x
    x = 10,967,442.85/3,780.77
  6. Step 6: Final answer
    x = 2,900.85

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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.