Home / 5,428.23-8,135.64-3,090.17

Finding the Fourth Proportional to 5,428.23, 8,135.64 and 3,090.17

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Solution

The fourth proportional to 5,428.23, 8,135.64 and 3,090.17 is: 4,631.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.23 : 8,135.64 = 3,090.17 : x
  2. Step 2: Convert to fraction form
    5,428.23/8,135.64 = 3,090.17/x
  3. Step 3: Cross multiply
    5,428.23x = 8,135.64 × 3,090.17
  4. Step 4: Simplify right side
    5,428.23x = 25,140,469.98
  5. Step 5: Solve for x
    x = 25,140,469.98/5,428.23
  6. Step 6: Final answer
    x = 4,631.43

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1.5x scale

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.