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Finding the Fourth Proportional to 6,866.40, 9,475.64 and 3,722.56

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Solution

The fourth proportional to 6,866.40, 9,475.64 and 3,722.56 is: 5,137.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,866.40 : 9,475.64 = 3,722.56 : x
  2. Step 2: Convert to fraction form
    6,866.40/9,475.64 = 3,722.56/x
  3. Step 3: Cross multiply
    6,866.40x = 9,475.64 × 3,722.56
  4. Step 4: Simplify right side
    6,866.40x = 35,273,638.44
  5. Step 5: Solve for x
    x = 35,273,638.44/6,866.40
  6. Step 6: Final answer
    x = 5,137.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.