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Finding the Fourth Proportional to 7,188.91, 9,921.87 and 6,009.55

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Solution

The fourth proportional to 7,188.91, 9,921.87 and 6,009.55 is: 8,294.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.91 : 9,921.87 = 6,009.55 : x
  2. Step 2: Convert to fraction form
    7,188.91/9,921.87 = 6,009.55/x
  3. Step 3: Cross multiply
    7,188.91x = 9,921.87 × 6,009.55
  4. Step 4: Simplify right side
    7,188.91x = 59,625,949.05
  5. Step 5: Solve for x
    x = 59,625,949.05/7,188.91
  6. Step 6: Final answer
    x = 8,294.16

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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.