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Finding the Fourth Proportional to 8,417.70, 11,623.77 and 5,279.30

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Solution

The fourth proportional to 8,417.70, 11,623.77 and 5,279.30 is: 7,290.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.70 : 11,623.77 = 5,279.30 : x
  2. Step 2: Convert to fraction form
    8,417.70/11,623.77 = 5,279.30/x
  3. Step 3: Cross multiply
    8,417.70x = 11,623.77 × 5,279.30
  4. Step 4: Simplify right side
    8,417.70x = 61,365,368.96
  5. Step 5: Solve for x
    x = 61,365,368.96/8,417.70
  6. Step 6: Final answer
    x = 7,290.04

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