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Finding the Fourth Proportional to 8,712.70, 13,069.76 and 5,226.53

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Solution

The fourth proportional to 8,712.70, 13,069.76 and 5,226.53 is: 7,840.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.70 : 13,069.76 = 5,226.53 : x
  2. Step 2: Convert to fraction form
    8,712.70/13,069.76 = 5,226.53/x
  3. Step 3: Cross multiply
    8,712.70x = 13,069.76 × 5,226.53
  4. Step 4: Simplify right side
    8,712.70x = 68,309,401.25
  5. Step 5: Solve for x
    x = 68,309,401.25/8,712.70
  6. Step 6: Final answer
    x = 7,840.21

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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.