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Finding the Fourth Proportional to 7,216.64, 9,933.28 and 5,117.12

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Solution

The fourth proportional to 7,216.64, 9,933.28 and 5,117.12 is: 7,043.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.64 : 9,933.28 = 5,117.12 : x
  2. Step 2: Convert to fraction form
    7,216.64/9,933.28 = 5,117.12/x
  3. Step 3: Cross multiply
    7,216.64x = 9,933.28 × 5,117.12
  4. Step 4: Simplify right side
    7,216.64x = 50,829,785.75
  5. Step 5: Solve for x
    x = 50,829,785.75/7,216.64
  6. Step 6: Final answer
    x = 7,043.41

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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.