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Finding the Fourth Proportional to 6,687.70, 10,031.55 and 4,095.70

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Solution

The fourth proportional to 6,687.70, 10,031.55 and 4,095.70 is: 6,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,687.70 : 10,031.55 = 4,095.70 : x
  2. Step 2: Convert to fraction form
    6,687.70/10,031.55 = 4,095.70/x
  3. Step 3: Cross multiply
    6,687.70x = 10,031.55 × 4,095.70
  4. Step 4: Simplify right side
    6,687.70x = 41,086,219.34
  5. Step 5: Solve for x
    x = 41,086,219.34/6,687.70
  6. Step 6: Final answer
    x = 6,143.55

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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.