Home / 3,780.60-5,217.20-2,102.16

Finding the Fourth Proportional to 3,780.60, 5,217.20 and 2,102.16

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Solution

The fourth proportional to 3,780.60, 5,217.20 and 2,102.16 is: 2,900.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.60 : 5,217.20 = 2,102.16 : x
  2. Step 2: Convert to fraction form
    3,780.60/5,217.20 = 2,102.16/x
  3. Step 3: Cross multiply
    3,780.60x = 5,217.20 × 2,102.16
  4. Step 4: Simplify right side
    3,780.60x = 10,967,389.15
  5. Step 5: Solve for x
    x = 10,967,389.15/3,780.60
  6. Step 6: Final answer
    x = 2,900.97

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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.