Home / 6,385.12-8,811.60-3,591.52

Finding the Fourth Proportional to 6,385.12, 8,811.60 and 3,591.52

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Solution

The fourth proportional to 6,385.12, 8,811.60 and 3,591.52 is: 4,956.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.12 : 8,811.60 = 3,591.52 : x
  2. Step 2: Convert to fraction form
    6,385.12/8,811.60 = 3,591.52/x
  3. Step 3: Cross multiply
    6,385.12x = 8,811.60 × 3,591.52
  4. Step 4: Simplify right side
    6,385.12x = 31,647,037.63
  5. Step 5: Solve for x
    x = 31,647,037.63/6,385.12
  6. Step 6: Final answer
    x = 4,956.37

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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.