Home / 8,422.56-12,631.68-3,493.60

Finding the Fourth Proportional to 8,422.56, 12,631.68 and 3,493.60

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Solution

The fourth proportional to 8,422.56, 12,631.68 and 3,493.60 is: 5,239.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.56 : 12,631.68 = 3,493.60 : x
  2. Step 2: Convert to fraction form
    8,422.56/12,631.68 = 3,493.60/x
  3. Step 3: Cross multiply
    8,422.56x = 12,631.68 × 3,493.60
  4. Step 4: Simplify right side
    8,422.56x = 44,130,037.25
  5. Step 5: Solve for x
    x = 44,130,037.25/8,422.56
  6. Step 6: Final answer
    x = 5,239.50

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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.