Home / 7,428.20-11,147.30-3,045.53

Finding the Fourth Proportional to 7,428.20, 11,147.30 and 3,045.53

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Solution

The fourth proportional to 7,428.20, 11,147.30 and 3,045.53 is: 4,570.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.20 : 11,147.30 = 3,045.53 : x
  2. Step 2: Convert to fraction form
    7,428.20/11,147.30 = 3,045.53/x
  3. Step 3: Cross multiply
    7,428.20x = 11,147.30 × 3,045.53
  4. Step 4: Simplify right side
    7,428.20x = 33,949,365.60
  5. Step 5: Solve for x
    x = 33,949,365.60/7,428.20
  6. Step 6: Final answer
    x = 4,570.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.