Home / 5,428.21-7,491.48-3,190.39

Finding the Fourth Proportional to 5,428.21, 7,491.48 and 3,190.39

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Solution

The fourth proportional to 5,428.21, 7,491.48 and 3,190.39 is: 4,403.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.21 : 7,491.48 = 3,190.39 : x
  2. Step 2: Convert to fraction form
    5,428.21/7,491.48 = 3,190.39/x
  3. Step 3: Cross multiply
    5,428.21x = 7,491.48 × 3,190.39
  4. Step 4: Simplify right side
    5,428.21x = 23,900,742.88
  5. Step 5: Solve for x
    x = 23,900,742.88/5,428.21
  6. Step 6: Final answer
    x = 4,403.06

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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.