Home / 5,479.31-8,216.86-4,311.61

Finding the Fourth Proportional to 5,479.31, 8,216.86 and 4,311.61

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Solution

The fourth proportional to 5,479.31, 8,216.86 and 4,311.61 is: 6,465.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.31 : 8,216.86 = 4,311.61 : x
  2. Step 2: Convert to fraction form
    5,479.31/8,216.86 = 4,311.61/x
  3. Step 3: Cross multiply
    5,479.31x = 8,216.86 × 4,311.61
  4. Step 4: Simplify right side
    5,479.31x = 35,427,895.74
  5. Step 5: Solve for x
    x = 35,427,895.74/5,479.31
  6. Step 6: Final answer
    x = 6,465.76

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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.