Home / 7,420.84-11,131.22-1,874.18

Finding the Fourth Proportional to 7,420.84, 11,131.22 and 1,874.18

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Solution

The fourth proportional to 7,420.84, 11,131.22 and 1,874.18 is: 2,811.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.84 : 11,131.22 = 1,874.18 : x
  2. Step 2: Convert to fraction form
    7,420.84/11,131.22 = 1,874.18/x
  3. Step 3: Cross multiply
    7,420.84x = 11,131.22 × 1,874.18
  4. Step 4: Simplify right side
    7,420.84x = 20,861,942.41
  5. Step 5: Solve for x
    x = 20,861,942.41/7,420.84
  6. Step 6: Final answer
    x = 2,811.27

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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.