Home / 8,321.22-12,483.65-3,127.09

Finding the Fourth Proportional to 8,321.22, 12,483.65 and 3,127.09

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Solution

The fourth proportional to 8,321.22, 12,483.65 and 3,127.09 is: 4,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.22 : 12,483.65 = 3,127.09 : x
  2. Step 2: Convert to fraction form
    8,321.22/12,483.65 = 3,127.09/x
  3. Step 3: Cross multiply
    8,321.22x = 12,483.65 × 3,127.09
  4. Step 4: Simplify right side
    8,321.22x = 39,037,497.08
  5. Step 5: Solve for x
    x = 39,037,497.08/8,321.22
  6. Step 6: Final answer
    x = 4,691.32

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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.