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Finding the Fourth Proportional to 6,622.53, 9,139.07 and 3,935.60

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Solution

The fourth proportional to 6,622.53, 9,139.07 and 3,935.60 is: 5,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.53 : 9,139.07 = 3,935.60 : x
  2. Step 2: Convert to fraction form
    6,622.53/9,139.07 = 3,935.60/x
  3. Step 3: Cross multiply
    6,622.53x = 9,139.07 × 3,935.60
  4. Step 4: Simplify right side
    6,622.53x = 35,967,707.49
  5. Step 5: Solve for x
    x = 35,967,707.49/6,622.53
  6. Step 6: Final answer
    x = 5,431.11

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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.