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Finding the Fourth Proportional to 8,495.72, 12,726.57 and 6,638.12

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Solution

The fourth proportional to 8,495.72, 12,726.57 and 6,638.12 is: 9,943.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495.72 : 12,726.57 = 6,638.12 : x
  2. Step 2: Convert to fraction form
    8,495.72/12,726.57 = 6,638.12/x
  3. Step 3: Cross multiply
    8,495.72x = 12,726.57 × 6,638.12
  4. Step 4: Simplify right side
    8,495.72x = 84,480,498.85
  5. Step 5: Solve for x
    x = 84,480,498.85/8,495.72
  6. Step 6: Final answer
    x = 9,943.89

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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.