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Finding the Fourth Proportional to 7,221.56, 9,964.67 and 4,387.44

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Solution

The fourth proportional to 7,221.56, 9,964.67 and 4,387.44 is: 6,054.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.56 : 9,964.67 = 4,387.44 : x
  2. Step 2: Convert to fraction form
    7,221.56/9,964.67 = 4,387.44/x
  3. Step 3: Cross multiply
    7,221.56x = 9,964.67 × 4,387.44
  4. Step 4: Simplify right side
    7,221.56x = 43,719,391.74
  5. Step 5: Solve for x
    x = 43,719,391.74/7,221.56
  6. Step 6: Final answer
    x = 6,054.01

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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.