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Finding the Fourth Proportional to 6,646.05, 9,969.09 and 6,240.09

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Solution

The fourth proportional to 6,646.05, 9,969.09 and 6,240.09 is: 9,360.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,646.05 : 9,969.09 = 6,240.09 : x
  2. Step 2: Convert to fraction form
    6,646.05/9,969.09 = 6,240.09/x
  3. Step 3: Cross multiply
    6,646.05x = 9,969.09 × 6,240.09
  4. Step 4: Simplify right side
    6,646.05x = 62,208,018.82
  5. Step 5: Solve for x
    x = 62,208,018.82/6,646.05
  6. Step 6: Final answer
    x = 9,360.15

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Half scale
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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.