Home / 5,428.31-7,491.12-3,190.91

Finding the Fourth Proportional to 5,428.31, 7,491.12 and 3,190.91

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Solution

The fourth proportional to 5,428.31, 7,491.12 and 3,190.91 is: 4,403.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.31 : 7,491.12 = 3,190.91 : x
  2. Step 2: Convert to fraction form
    5,428.31/7,491.12 = 3,190.91/x
  3. Step 3: Cross multiply
    5,428.31x = 7,491.12 × 3,190.91
  4. Step 4: Simplify right side
    5,428.31x = 23,903,452.26
  5. Step 5: Solve for x
    x = 23,903,452.26/5,428.31
  6. Step 6: Final answer
    x = 4,403.48

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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.