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Finding the Fourth Proportional to 6,663.69, 9,188.99 and 5,722.60

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Solution

The fourth proportional to 6,663.69, 9,188.99 and 5,722.60 is: 7,891.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663.69 : 9,188.99 = 5,722.60 : x
  2. Step 2: Convert to fraction form
    6,663.69/9,188.99 = 5,722.60/x
  3. Step 3: Cross multiply
    6,663.69x = 9,188.99 × 5,722.60
  4. Step 4: Simplify right side
    6,663.69x = 52,584,933.47
  5. Step 5: Solve for x
    x = 52,584,933.47/6,663.69
  6. Step 6: Final answer
    x = 7,891.26

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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.