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Finding the Fourth Proportional to 6,663.90, 9,192.48 and 4,009.68

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Solution

The fourth proportional to 6,663.90, 9,192.48 and 4,009.68 is: 5,531.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663.90 : 9,192.48 = 4,009.68 : x
  2. Step 2: Convert to fraction form
    6,663.90/9,192.48 = 4,009.68/x
  3. Step 3: Cross multiply
    6,663.90x = 9,192.48 × 4,009.68
  4. Step 4: Simplify right side
    6,663.90x = 36,858,903.21
  5. Step 5: Solve for x
    x = 36,858,903.21/6,663.90
  6. Step 6: Final answer
    x = 5,531.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.