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Finding the Fourth Proportional to 7,220.32, 9,965.36 and 6,039.52

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Solution

The fourth proportional to 7,220.32, 9,965.36 and 6,039.52 is: 8,335.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.32 : 9,965.36 = 6,039.52 : x
  2. Step 2: Convert to fraction form
    7,220.32/9,965.36 = 6,039.52/x
  3. Step 3: Cross multiply
    7,220.32x = 9,965.36 × 6,039.52
  4. Step 4: Simplify right side
    7,220.32x = 60,185,991.03
  5. Step 5: Solve for x
    x = 60,185,991.03/7,220.32
  6. Step 6: Final answer
    x = 8,335.64

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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.