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Finding the Fourth Proportional to 6,609.36, 9,915.72 and 1,992.24

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Solution

The fourth proportional to 6,609.36, 9,915.72 and 1,992.24 is: 2,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.36 : 9,915.72 = 1,992.24 : x
  2. Step 2: Convert to fraction form
    6,609.36/9,915.72 = 1,992.24/x
  3. Step 3: Cross multiply
    6,609.36x = 9,915.72 × 1,992.24
  4. Step 4: Simplify right side
    6,609.36x = 19,754,494.01
  5. Step 5: Solve for x
    x = 19,754,494.01/6,609.36
  6. Step 6: Final answer
    x = 2,988.87

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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.