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Finding the Fourth Proportional to 8,842.72, 13,262.64 and 2,686.72

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Solution

The fourth proportional to 8,842.72, 13,262.64 and 2,686.72 is: 4,029.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,842.72 : 13,262.64 = 2,686.72 : x
  2. Step 2: Convert to fraction form
    8,842.72/13,262.64 = 2,686.72/x
  3. Step 3: Cross multiply
    8,842.72x = 13,262.64 × 2,686.72
  4. Step 4: Simplify right side
    8,842.72x = 35,633,000.14
  5. Step 5: Solve for x
    x = 35,633,000.14/8,842.72
  6. Step 6: Final answer
    x = 4,029.64

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1.5x scale

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.