Home / 5,428.83-7,491.87-3,190.76

Finding the Fourth Proportional to 5,428.83, 7,491.87 and 3,190.76

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Solution

The fourth proportional to 5,428.83, 7,491.87 and 3,190.76 is: 4,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.83 : 7,491.87 = 3,190.76 : x
  2. Step 2: Convert to fraction form
    5,428.83/7,491.87 = 3,190.76/x
  3. Step 3: Cross multiply
    5,428.83x = 7,491.87 × 3,190.76
  4. Step 4: Simplify right side
    5,428.83x = 23,904,759.12
  5. Step 5: Solve for x
    x = 23,904,759.12/5,428.83
  6. Step 6: Final answer
    x = 4,403.30

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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.