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Finding the Fourth Proportional to 8,353.77, 12,519.28 and 3,156.81

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Solution

The fourth proportional to 8,353.77, 12,519.28 and 3,156.81 is: 4,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,353.77 : 12,519.28 = 3,156.81 : x
  2. Step 2: Convert to fraction form
    8,353.77/12,519.28 = 3,156.81/x
  3. Step 3: Cross multiply
    8,353.77x = 12,519.28 × 3,156.81
  4. Step 4: Simplify right side
    8,353.77x = 39,520,988.30
  5. Step 5: Solve for x
    x = 39,520,988.30/8,353.77
  6. Step 6: Final answer
    x = 4,730.92

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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.