Home / 3,143.66-4,720.36-2,856.92

Finding the Fourth Proportional to 3,143.66, 4,720.36 and 2,856.92

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Solution

The fourth proportional to 3,143.66, 4,720.36 and 2,856.92 is: 4,289.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.66 : 4,720.36 = 2,856.92 : x
  2. Step 2: Convert to fraction form
    3,143.66/4,720.36 = 2,856.92/x
  3. Step 3: Cross multiply
    3,143.66x = 4,720.36 × 2,856.92
  4. Step 4: Simplify right side
    3,143.66x = 13,485,690.89
  5. Step 5: Solve for x
    x = 13,485,690.89/3,143.66
  6. Step 6: Final answer
    x = 4,289.81

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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.