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Finding the Fourth Proportional to 8,753.16, 13,130.54 and 3,486.90

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Solution

The fourth proportional to 8,753.16, 13,130.54 and 3,486.90 is: 5,230.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.16 : 13,130.54 = 3,486.90 : x
  2. Step 2: Convert to fraction form
    8,753.16/13,130.54 = 3,486.90/x
  3. Step 3: Cross multiply
    8,753.16x = 13,130.54 × 3,486.90
  4. Step 4: Simplify right side
    8,753.16x = 45,784,879.93
  5. Step 5: Solve for x
    x = 45,784,879.93/8,753.16
  6. Step 6: Final answer
    x = 5,230.67

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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.