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Finding the Fourth Proportional to 6,612.50, 9,918.82 and 1,995.50

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Solution

The fourth proportional to 6,612.50, 9,918.82 and 1,995.50 is: 2,993.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.50 : 9,918.82 = 1,995.50 : x
  2. Step 2: Convert to fraction form
    6,612.50/9,918.82 = 1,995.50/x
  3. Step 3: Cross multiply
    6,612.50x = 9,918.82 × 1,995.50
  4. Step 4: Simplify right side
    6,612.50x = 19,793,005.31
  5. Step 5: Solve for x
    x = 19,793,005.31/6,612.50
  6. Step 6: Final answer
    x = 2,993.27

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Double scale
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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.