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Finding the Fourth Proportional to 8,663.17, 12,995.72 and 2,818.69

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Solution

The fourth proportional to 8,663.17, 12,995.72 and 2,818.69 is: 4,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663.17 : 12,995.72 = 2,818.69 : x
  2. Step 2: Convert to fraction form
    8,663.17/12,995.72 = 2,818.69/x
  3. Step 3: Cross multiply
    8,663.17x = 12,995.72 × 2,818.69
  4. Step 4: Simplify right side
    8,663.17x = 36,630,891.91
  5. Step 5: Solve for x
    x = 36,630,891.91/8,663.17
  6. Step 6: Final answer
    x = 4,228.35

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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.