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Finding the Fourth Proportional to 8,881, 13,317.62 and 4,720

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Solution

The fourth proportional to 8,881, 13,317.62 and 4,720 is: 7,077.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881 : 13,317.62 = 4,720 : x
  2. Step 2: Convert to fraction form
    8,881/13,317.62 = 4,720/x
  3. Step 3: Cross multiply
    8,881x = 13,317.62 × 4,720
  4. Step 4: Simplify right side
    8,881x = 62,859,166.40
  5. Step 5: Solve for x
    x = 62,859,166.40/8,881
  6. Step 6: Final answer
    x = 7,077.94

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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.