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Finding the Fourth Proportional to 5,491.99, 7,578.12 and 3,133.81

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Solution

The fourth proportional to 5,491.99, 7,578.12 and 3,133.81 is: 4,324.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,491.99 : 7,578.12 = 3,133.81 : x
  2. Step 2: Convert to fraction form
    5,491.99/7,578.12 = 3,133.81/x
  3. Step 3: Cross multiply
    5,491.99x = 7,578.12 × 3,133.81
  4. Step 4: Simplify right side
    5,491.99x = 23,748,388.24
  5. Step 5: Solve for x
    x = 23,748,388.24/5,491.99
  6. Step 6: Final answer
    x = 4,324.19

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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.