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Finding the Fourth Proportional to 6,687.81, 10,031.72 and 3,933.68

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Solution

The fourth proportional to 6,687.81, 10,031.72 and 3,933.68 is: 5,900.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,687.81 : 10,031.72 = 3,933.68 : x
  2. Step 2: Convert to fraction form
    6,687.81/10,031.72 = 3,933.68/x
  3. Step 3: Cross multiply
    6,687.81x = 10,031.72 × 3,933.68
  4. Step 4: Simplify right side
    6,687.81x = 39,461,506.50
  5. Step 5: Solve for x
    x = 39,461,506.50/6,687.81
  6. Step 6: Final answer
    x = 5,900.51

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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.