Home / 2,856.58-4,286.20-1,213.52

Finding the Fourth Proportional to 2,856.58, 4,286.20 and 1,213.52

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Solution

The fourth proportional to 2,856.58, 4,286.20 and 1,213.52 is: 1,820.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.58 : 4,286.20 = 1,213.52 : x
  2. Step 2: Convert to fraction form
    2,856.58/4,286.20 = 1,213.52/x
  3. Step 3: Cross multiply
    2,856.58x = 4,286.20 × 1,213.52
  4. Step 4: Simplify right side
    2,856.58x = 5,201,389.42
  5. Step 5: Solve for x
    x = 5,201,389.42/2,856.58
  6. Step 6: Final answer
    x = 1,820.85

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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.