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Finding the Fourth Proportional to 8,708.60, 13,064.40 and 2,866.88

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Solution

The fourth proportional to 8,708.60, 13,064.40 and 2,866.88 is: 4,300.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.60 : 13,064.40 = 2,866.88 : x
  2. Step 2: Convert to fraction form
    8,708.60/13,064.40 = 2,866.88/x
  3. Step 3: Cross multiply
    8,708.60x = 13,064.40 × 2,866.88
  4. Step 4: Simplify right side
    8,708.60x = 37,454,067.07
  5. Step 5: Solve for x
    x = 37,454,067.07/8,708.60
  6. Step 6: Final answer
    x = 4,300.81

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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.