Home / 5,491.30-7,578.54-3,133.80

Finding the Fourth Proportional to 5,491.30, 7,578.54 and 3,133.80

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Solution

The fourth proportional to 5,491.30, 7,578.54 and 3,133.80 is: 4,324.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,491.30 : 7,578.54 = 3,133.80 : x
  2. Step 2: Convert to fraction form
    5,491.30/7,578.54 = 3,133.80/x
  3. Step 3: Cross multiply
    5,491.30x = 7,578.54 × 3,133.80
  4. Step 4: Simplify right side
    5,491.30x = 23,749,627.01
  5. Step 5: Solve for x
    x = 23,749,627.01/5,491.30
  6. Step 6: Final answer
    x = 4,324.95

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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.