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Finding the Fourth Proportional to 8,659.91, 12,988.06 and 3,038.33

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Solution

The fourth proportional to 8,659.91, 12,988.06 and 3,038.33 is: 4,556.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.91 : 12,988.06 = 3,038.33 : x
  2. Step 2: Convert to fraction form
    8,659.91/12,988.06 = 3,038.33/x
  3. Step 3: Cross multiply
    8,659.91x = 12,988.06 × 3,038.33
  4. Step 4: Simplify right side
    8,659.91x = 39,462,012.34
  5. Step 5: Solve for x
    x = 39,462,012.34/8,659.91
  6. Step 6: Final answer
    x = 4,556.86

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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.