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Finding the Fourth Proportional to 6,663.81, 9,992.80 and 3,543.06

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Solution

The fourth proportional to 6,663.81, 9,992.80 and 3,543.06 is: 5,313.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663.81 : 9,992.80 = 3,543.06 : x
  2. Step 2: Convert to fraction form
    6,663.81/9,992.80 = 3,543.06/x
  3. Step 3: Cross multiply
    6,663.81x = 9,992.80 × 3,543.06
  4. Step 4: Simplify right side
    6,663.81x = 35,405,089.97
  5. Step 5: Solve for x
    x = 35,405,089.97/6,663.81
  6. Step 6: Final answer
    x = 5,313.04

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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.