Home / 7,989.81-11,015.20-5,596.57

Finding the Fourth Proportional to 7,989.81, 11,015.20 and 5,596.57

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Solution

The fourth proportional to 7,989.81, 11,015.20 and 5,596.57 is: 7,715.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.81 : 11,015.20 = 5,596.57 : x
  2. Step 2: Convert to fraction form
    7,989.81/11,015.20 = 5,596.57/x
  3. Step 3: Cross multiply
    7,989.81x = 11,015.20 × 5,596.57
  4. Step 4: Simplify right side
    7,989.81x = 61,647,337.86
  5. Step 5: Solve for x
    x = 61,647,337.86/7,989.81
  6. Step 6: Final answer
    x = 7,715.75

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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.