Home / 5,324.11-7,985.55-1,428.21

Finding the Fourth Proportional to 5,324.11, 7,985.55 and 1,428.21

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Solution

The fourth proportional to 5,324.11, 7,985.55 and 1,428.21 is: 2,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,324.11 : 7,985.55 = 1,428.21 : x
  2. Step 2: Convert to fraction form
    5,324.11/7,985.55 = 1,428.21/x
  3. Step 3: Cross multiply
    5,324.11x = 7,985.55 × 1,428.21
  4. Step 4: Simplify right side
    5,324.11x = 11,405,042.37
  5. Step 5: Solve for x
    x = 11,405,042.37/5,324.11
  6. Step 6: Final answer
    x = 2,142.15

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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.