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Finding the Fourth Proportional to 8,618.87, 11,893.58 and 4,842.19

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Solution

The fourth proportional to 8,618.87, 11,893.58 and 4,842.19 is: 6,681.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.87 : 11,893.58 = 4,842.19 : x
  2. Step 2: Convert to fraction form
    8,618.87/11,893.58 = 4,842.19/x
  3. Step 3: Cross multiply
    8,618.87x = 11,893.58 × 4,842.19
  4. Step 4: Simplify right side
    8,618.87x = 57,590,974.14
  5. Step 5: Solve for x
    x = 57,590,974.14/8,618.87
  6. Step 6: Final answer
    x = 6,681.96

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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.