Home / 8,311.28-12,471.56-4,415.58

Finding the Fourth Proportional to 8,311.28, 12,471.56 and 4,415.58

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Solution

The fourth proportional to 8,311.28, 12,471.56 and 4,415.58 is: 6,625.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.28 : 12,471.56 = 4,415.58 : x
  2. Step 2: Convert to fraction form
    8,311.28/12,471.56 = 4,415.58/x
  3. Step 3: Cross multiply
    8,311.28x = 12,471.56 × 4,415.58
  4. Step 4: Simplify right side
    8,311.28x = 55,069,181.94
  5. Step 5: Solve for x
    x = 55,069,181.94/8,311.28
  6. Step 6: Final answer
    x = 6,625.84

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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.