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Finding the Fourth Proportional to 6,640.67, 9,162.64 and 5,568.28

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Solution

The fourth proportional to 6,640.67, 9,162.64 and 5,568.28 is: 7,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.67 : 9,162.64 = 5,568.28 : x
  2. Step 2: Convert to fraction form
    6,640.67/9,162.64 = 5,568.28/x
  3. Step 3: Cross multiply
    6,640.67x = 9,162.64 × 5,568.28
  4. Step 4: Simplify right side
    6,640.67x = 51,020,139.22
  5. Step 5: Solve for x
    x = 51,020,139.22/6,640.67
  6. Step 6: Final answer
    x = 7,682.98

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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.