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Finding the Fourth Proportional to 8,813.57, 12,164.85 and 5,985.66

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Solution

The fourth proportional to 8,813.57, 12,164.85 and 5,985.66 is: 8,261.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.57 : 12,164.85 = 5,985.66 : x
  2. Step 2: Convert to fraction form
    8,813.57/12,164.85 = 5,985.66/x
  3. Step 3: Cross multiply
    8,813.57x = 12,164.85 × 5,985.66
  4. Step 4: Simplify right side
    8,813.57x = 72,814,626.12
  5. Step 5: Solve for x
    x = 72,814,626.12/8,813.57
  6. Step 6: Final answer
    x = 8,261.65

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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.