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Finding the Fourth Proportional to 8,671.85, 11,967.09 and 4,692.87

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Solution

The fourth proportional to 8,671.85, 11,967.09 and 4,692.87 is: 6,476.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.85 : 11,967.09 = 4,692.87 : x
  2. Step 2: Convert to fraction form
    8,671.85/11,967.09 = 4,692.87/x
  3. Step 3: Cross multiply
    8,671.85x = 11,967.09 × 4,692.87
  4. Step 4: Simplify right side
    8,671.85x = 56,159,997.65
  5. Step 5: Solve for x
    x = 56,159,997.65/8,671.85
  6. Step 6: Final answer
    x = 6,476.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.