Home / 5,428.08-8,134.83-2,139.35

Finding the Fourth Proportional to 5,428.08, 8,134.83 and 2,139.35

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Solution

The fourth proportional to 5,428.08, 8,134.83 and 2,139.35 is: 3,206.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.08 : 8,134.83 = 2,139.35 : x
  2. Step 2: Convert to fraction form
    5,428.08/8,134.83 = 2,139.35/x
  3. Step 3: Cross multiply
    5,428.08x = 8,134.83 × 2,139.35
  4. Step 4: Simplify right side
    5,428.08x = 17,403,207.89
  5. Step 5: Solve for x
    x = 17,403,207.89/5,428.08
  6. Step 6: Final answer
    x = 3,206.14

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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.