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Finding the Fourth Proportional to 8,695.81, 13,044.30 and 4,312.09

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Solution

The fourth proportional to 8,695.81, 13,044.30 and 4,312.09 is: 6,468.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.81 : 13,044.30 = 4,312.09 : x
  2. Step 2: Convert to fraction form
    8,695.81/13,044.30 = 4,312.09/x
  3. Step 3: Cross multiply
    8,695.81x = 13,044.30 × 4,312.09
  4. Step 4: Simplify right side
    8,695.81x = 56,248,195.59
  5. Step 5: Solve for x
    x = 56,248,195.59/8,695.81
  6. Step 6: Final answer
    x = 6,468.43

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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.