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Finding the Fourth Proportional to 6,663.95, 9,191.31 and 5,908.63

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Solution

The fourth proportional to 6,663.95, 9,191.31 and 5,908.63 is: 8,149.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,663.95 : 9,191.31 = 5,908.63 : x
  2. Step 2: Convert to fraction form
    6,663.95/9,191.31 = 5,908.63/x
  3. Step 3: Cross multiply
    6,663.95x = 9,191.31 × 5,908.63
  4. Step 4: Simplify right side
    6,663.95x = 54,308,050.01
  5. Step 5: Solve for x
    x = 54,308,050.01/6,663.95
  6. Step 6: Final answer
    x = 8,149.53

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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.