Home / 8,311.29-12,450.47-6,851.40

Finding the Fourth Proportional to 8,311.29, 12,450.47 and 6,851.40

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Solution

The fourth proportional to 8,311.29, 12,450.47 and 6,851.40 is: 10,263.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.29 : 12,450.47 = 6,851.40 : x
  2. Step 2: Convert to fraction form
    8,311.29/12,450.47 = 6,851.40/x
  3. Step 3: Cross multiply
    8,311.29x = 12,450.47 × 6,851.40
  4. Step 4: Simplify right side
    8,311.29x = 85,303,115.90
  5. Step 5: Solve for x
    x = 85,303,115.90/8,311.29
  6. Step 6: Final answer
    x = 10,263.52

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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.