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Finding the Fourth Proportional to 8,609.52, 11,860.92 and 7,028.40

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Solution

The fourth proportional to 8,609.52, 11,860.92 and 7,028.40 is: 9,682.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.52 : 11,860.92 = 7,028.40 : x
  2. Step 2: Convert to fraction form
    8,609.52/11,860.92 = 7,028.40/x
  3. Step 3: Cross multiply
    8,609.52x = 11,860.92 × 7,028.40
  4. Step 4: Simplify right side
    8,609.52x = 83,363,290.13
  5. Step 5: Solve for x
    x = 83,363,290.13/8,609.52
  6. Step 6: Final answer
    x = 9,682.69

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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.