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Finding the Fourth Proportional to 8,643.46, 12,961.95 and 3,710.56

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Solution

The fourth proportional to 8,643.46, 12,961.95 and 3,710.56 is: 5,564.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,643.46 : 12,961.95 = 3,710.56 : x
  2. Step 2: Convert to fraction form
    8,643.46/12,961.95 = 3,710.56/x
  3. Step 3: Cross multiply
    8,643.46x = 12,961.95 × 3,710.56
  4. Step 4: Simplify right side
    8,643.46x = 48,096,093.19
  5. Step 5: Solve for x
    x = 48,096,093.19/8,643.46
  6. Step 6: Final answer
    x = 5,564.45

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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.