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Finding the Fourth Proportional to 6,653.82, 9,980.78 and 2,955.05

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Solution

The fourth proportional to 6,653.82, 9,980.78 and 2,955.05 is: 4,432.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,653.82 : 9,980.78 = 2,955.05 : x
  2. Step 2: Convert to fraction form
    6,653.82/9,980.78 = 2,955.05/x
  3. Step 3: Cross multiply
    6,653.82x = 9,980.78 × 2,955.05
  4. Step 4: Simplify right side
    6,653.82x = 29,493,703.94
  5. Step 5: Solve for x
    x = 29,493,703.94/6,653.82
  6. Step 6: Final answer
    x = 4,432.60

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Double scale
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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.