Home / 7,421.45-11,132.78-2,491.25

Finding the Fourth Proportional to 7,421.45, 11,132.78 and 2,491.25

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Solution

The fourth proportional to 7,421.45, 11,132.78 and 2,491.25 is: 3,737.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.45 : 11,132.78 = 2,491.25 : x
  2. Step 2: Convert to fraction form
    7,421.45/11,132.78 = 2,491.25/x
  3. Step 3: Cross multiply
    7,421.45x = 11,132.78 × 2,491.25
  4. Step 4: Simplify right side
    7,421.45x = 27,734,470.05
  5. Step 5: Solve for x
    x = 27,734,470.05/7,421.45
  6. Step 6: Final answer
    x = 3,737.07

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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.