Home / 7,690.86-11,532.66-4,571.28

Finding the Fourth Proportional to 7,690.86, 11,532.66 and 4,571.28

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Solution

The fourth proportional to 7,690.86, 11,532.66 and 4,571.28 is: 6,854.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.86 : 11,532.66 = 4,571.28 : x
  2. Step 2: Convert to fraction form
    7,690.86/11,532.66 = 4,571.28/x
  3. Step 3: Cross multiply
    7,690.86x = 11,532.66 × 4,571.28
  4. Step 4: Simplify right side
    7,690.86x = 52,719,018.00
  5. Step 5: Solve for x
    x = 52,719,018.00/7,690.86
  6. Step 6: Final answer
    x = 6,854.76

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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.