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Finding the Fourth Proportional to 8,503.40, 12,763.17 and 5,222.90

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Solution

The fourth proportional to 8,503.40, 12,763.17 and 5,222.90 is: 7,839.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,503.40 : 12,763.17 = 5,222.90 : x
  2. Step 2: Convert to fraction form
    8,503.40/12,763.17 = 5,222.90/x
  3. Step 3: Cross multiply
    8,503.40x = 12,763.17 × 5,222.90
  4. Step 4: Simplify right side
    8,503.40x = 66,660,696.78
  5. Step 5: Solve for x
    x = 66,660,696.78/8,503.40
  6. Step 6: Final answer
    x = 7,839.30

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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.