Home / 7,981.89-11,015.68-4,625.85

Finding the Fourth Proportional to 7,981.89, 11,015.68 and 4,625.85

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Solution

The fourth proportional to 7,981.89, 11,015.68 and 4,625.85 is: 6,384.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.89 : 11,015.68 = 4,625.85 : x
  2. Step 2: Convert to fraction form
    7,981.89/11,015.68 = 4,625.85/x
  3. Step 3: Cross multiply
    7,981.89x = 11,015.68 × 4,625.85
  4. Step 4: Simplify right side
    7,981.89x = 50,956,921.75
  5. Step 5: Solve for x
    x = 50,956,921.75/7,981.89
  6. Step 6: Final answer
    x = 6,384.07

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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.