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Finding the Fourth Proportional to 8,618.33, 11,888.60 and 5,547

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Solution

The fourth proportional to 8,618.33, 11,888.60 and 5,547 is: 7,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.33 : 11,888.60 = 5,547 : x
  2. Step 2: Convert to fraction form
    8,618.33/11,888.60 = 5,547/x
  3. Step 3: Cross multiply
    8,618.33x = 11,888.60 × 5,547
  4. Step 4: Simplify right side
    8,618.33x = 65,946,036.47
  5. Step 5: Solve for x
    x = 65,946,036.47/8,618.33
  6. Step 6: Final answer
    x = 7,651.84

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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.