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Finding the Fourth Proportional to 6,606.36, 9,909.54 and 1,989.36

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Solution

The fourth proportional to 6,606.36, 9,909.54 and 1,989.36 is: 2,984.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,606.36 : 9,909.54 = 1,989.36 : x
  2. Step 2: Convert to fraction form
    6,606.36/9,909.54 = 1,989.36/x
  3. Step 3: Cross multiply
    6,606.36x = 9,909.54 × 1,989.36
  4. Step 4: Simplify right side
    6,606.36x = 19,713,642.49
  5. Step 5: Solve for x
    x = 19,713,642.49/6,606.36
  6. Step 6: Final answer
    x = 2,984.04

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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.