Home / 3,820.16-5,730.29-2,780.73

Finding the Fourth Proportional to 3,820.16, 5,730.29 and 2,780.73

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Solution

The fourth proportional to 3,820.16, 5,730.29 and 2,780.73 is: 4,171.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.16 : 5,730.29 = 2,780.73 : x
  2. Step 2: Convert to fraction form
    3,820.16/5,730.29 = 2,780.73/x
  3. Step 3: Cross multiply
    3,820.16x = 5,730.29 × 2,780.73
  4. Step 4: Simplify right side
    3,820.16x = 15,934,346.76
  5. Step 5: Solve for x
    x = 15,934,346.76/3,820.16
  6. Step 6: Final answer
    x = 4,171.13

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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.