Home / 4,286.20-6,428.76-1,820.56

Finding the Fourth Proportional to 4,286.20, 6,428.76 and 1,820.56

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Solution

The fourth proportional to 4,286.20, 6,428.76 and 1,820.56 is: 2,730.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.20 : 6,428.76 = 1,820.56 : x
  2. Step 2: Convert to fraction form
    4,286.20/6,428.76 = 1,820.56/x
  3. Step 3: Cross multiply
    4,286.20x = 6,428.76 × 1,820.56
  4. Step 4: Simplify right side
    4,286.20x = 11,703,943.31
  5. Step 5: Solve for x
    x = 11,703,943.31/4,286.20
  6. Step 6: Final answer
    x = 2,730.61

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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.