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Finding the Fourth Proportional to 7,197.72, 9,935.64 and 5,626.32

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Solution

The fourth proportional to 7,197.72, 9,935.64 and 5,626.32 is: 7,766.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,197.72 : 9,935.64 = 5,626.32 : x
  2. Step 2: Convert to fraction form
    7,197.72/9,935.64 = 5,626.32/x
  3. Step 3: Cross multiply
    7,197.72x = 9,935.64 × 5,626.32
  4. Step 4: Simplify right side
    7,197.72x = 55,901,090.04
  5. Step 5: Solve for x
    x = 55,901,090.04/7,197.72
  6. Step 6: Final answer
    x = 7,766.50

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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.