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Finding the Fourth Proportional to 8,526.64, 12,788.12 and 2,681.88

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Solution

The fourth proportional to 8,526.64, 12,788.12 and 2,681.88 is: 4,022.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,526.64 : 12,788.12 = 2,681.88 : x
  2. Step 2: Convert to fraction form
    8,526.64/12,788.12 = 2,681.88/x
  3. Step 3: Cross multiply
    8,526.64x = 12,788.12 × 2,681.88
  4. Step 4: Simplify right side
    8,526.64x = 34,296,203.27
  5. Step 5: Solve for x
    x = 34,296,203.27/8,526.64
  6. Step 6: Final answer
    x = 4,022.24

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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.