Home / 8,515.19-12,763.78-3,246.80

Finding the Fourth Proportional to 8,515.19, 12,763.78 and 3,246.80

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Solution

The fourth proportional to 8,515.19, 12,763.78 and 3,246.80 is: 4,866.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.19 : 12,763.78 = 3,246.80 : x
  2. Step 2: Convert to fraction form
    8,515.19/12,763.78 = 3,246.80/x
  3. Step 3: Cross multiply
    8,515.19x = 12,763.78 × 3,246.80
  4. Step 4: Simplify right side
    8,515.19x = 41,441,440.90
  5. Step 5: Solve for x
    x = 41,441,440.90/8,515.19
  6. Step 6: Final answer
    x = 4,866.77

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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.