Home / 7,381.86-11,069.54-2,115.67

Finding the Fourth Proportional to 7,381.86, 11,069.54 and 2,115.67

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Solution

The fourth proportional to 7,381.86, 11,069.54 and 2,115.67 is: 3,172.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,381.86 : 11,069.54 = 2,115.67 : x
  2. Step 2: Convert to fraction form
    7,381.86/11,069.54 = 2,115.67/x
  3. Step 3: Cross multiply
    7,381.86x = 11,069.54 × 2,115.67
  4. Step 4: Simplify right side
    7,381.86x = 23,419,478.18
  5. Step 5: Solve for x
    x = 23,419,478.18/7,381.86
  6. Step 6: Final answer
    x = 3,172.57

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1.5x scale

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.