Home / 3,856.61-5,322.29-2,439.79

Finding the Fourth Proportional to 3,856.61, 5,322.29 and 2,439.79

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Solution

The fourth proportional to 3,856.61, 5,322.29 and 2,439.79 is: 3,367.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.61 : 5,322.29 = 2,439.79 : x
  2. Step 2: Convert to fraction form
    3,856.61/5,322.29 = 2,439.79/x
  3. Step 3: Cross multiply
    3,856.61x = 5,322.29 × 2,439.79
  4. Step 4: Simplify right side
    3,856.61x = 12,985,269.92
  5. Step 5: Solve for x
    x = 12,985,269.92/3,856.61
  6. Step 6: Final answer
    x = 3,367.02

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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.