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Finding the Fourth Proportional to 8,389.67, 11,577.89 and 4,613

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Solution

The fourth proportional to 8,389.67, 11,577.89 and 4,613 is: 6,366.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.67 : 11,577.89 = 4,613 : x
  2. Step 2: Convert to fraction form
    8,389.67/11,577.89 = 4,613/x
  3. Step 3: Cross multiply
    8,389.67x = 11,577.89 × 4,613
  4. Step 4: Simplify right side
    8,389.67x = 53,408,806.57
  5. Step 5: Solve for x
    x = 53,408,806.57/8,389.67
  6. Step 6: Final answer
    x = 6,366.02

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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.