Home / 8,276.30-12,418.90-6,431.12

Finding the Fourth Proportional to 8,276.30, 12,418.90 and 6,431.12

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Solution

The fourth proportional to 8,276.30, 12,418.90 and 6,431.12 is: 9,650.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,276.30 : 12,418.90 = 6,431.12 : x
  2. Step 2: Convert to fraction form
    8,276.30/12,418.90 = 6,431.12/x
  3. Step 3: Cross multiply
    8,276.30x = 12,418.90 × 6,431.12
  4. Step 4: Simplify right side
    8,276.30x = 79,867,358.00
  5. Step 5: Solve for x
    x = 79,867,358.00/8,276.30
  6. Step 6: Final answer
    x = 9,650.13

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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.