Home / 5,428.88-7,491.96-3,071.12

Finding the Fourth Proportional to 5,428.88, 7,491.96 and 3,071.12

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Solution

The fourth proportional to 5,428.88, 7,491.96 and 3,071.12 is: 4,238.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.88 : 7,491.96 = 3,071.12 : x
  2. Step 2: Convert to fraction form
    5,428.88/7,491.96 = 3,071.12/x
  3. Step 3: Cross multiply
    5,428.88x = 7,491.96 × 3,071.12
  4. Step 4: Simplify right side
    5,428.88x = 23,008,708.20
  5. Step 5: Solve for x
    x = 23,008,708.20/5,428.88
  6. Step 6: Final answer
    x = 4,238.21

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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.