Home / 8,331.72-11,499.04-5,188.92

Finding the Fourth Proportional to 8,331.72, 11,499.04 and 5,188.92

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Solution

The fourth proportional to 8,331.72, 11,499.04 and 5,188.92 is: 7,161.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,331.72 : 11,499.04 = 5,188.92 : x
  2. Step 2: Convert to fraction form
    8,331.72/11,499.04 = 5,188.92/x
  3. Step 3: Cross multiply
    8,331.72x = 11,499.04 × 5,188.92
  4. Step 4: Simplify right side
    8,331.72x = 59,667,598.64
  5. Step 5: Solve for x
    x = 59,667,598.64/8,331.72
  6. Step 6: Final answer
    x = 7,161.50

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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.