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Finding the Fourth Proportional to 6,643.35, 9,965.03 and 3,132.20

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Solution

The fourth proportional to 6,643.35, 9,965.03 and 3,132.20 is: 4,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,643.35 : 9,965.03 = 3,132.20 : x
  2. Step 2: Convert to fraction form
    6,643.35/9,965.03 = 3,132.20/x
  3. Step 3: Cross multiply
    6,643.35x = 9,965.03 × 3,132.20
  4. Step 4: Simplify right side
    6,643.35x = 31,212,476.22
  5. Step 5: Solve for x
    x = 31,212,476.22/6,643.35
  6. Step 6: Final answer
    x = 4,698.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.