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Finding the Fourth Proportional to 8,211.79, 12,317.42 and 2,368.99

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Solution

The fourth proportional to 8,211.79, 12,317.42 and 2,368.99 is: 3,553.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.79 : 12,317.42 = 2,368.99 : x
  2. Step 2: Convert to fraction form
    8,211.79/12,317.42 = 2,368.99/x
  3. Step 3: Cross multiply
    8,211.79x = 12,317.42 × 2,368.99
  4. Step 4: Simplify right side
    8,211.79x = 29,179,832.96
  5. Step 5: Solve for x
    x = 29,179,832.96/8,211.79
  6. Step 6: Final answer
    x = 3,553.41

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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.