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Finding the Fourth Proportional to 8,712.54, 13,068.57 and 3,518.22

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Solution

The fourth proportional to 8,712.54, 13,068.57 and 3,518.22 is: 5,277.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.54 : 13,068.57 = 3,518.22 : x
  2. Step 2: Convert to fraction form
    8,712.54/13,068.57 = 3,518.22/x
  3. Step 3: Cross multiply
    8,712.54x = 13,068.57 × 3,518.22
  4. Step 4: Simplify right side
    8,712.54x = 45,978,104.35
  5. Step 5: Solve for x
    x = 45,978,104.35/8,712.54
  6. Step 6: Final answer
    x = 5,277.23

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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.