Home / 5,239.08-7,860.08-2,121.28

Finding the Fourth Proportional to 5,239.08, 7,860.08 and 2,121.28

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Solution

The fourth proportional to 5,239.08, 7,860.08 and 2,121.28 is: 3,182.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.08 : 7,860.08 = 2,121.28 : x
  2. Step 2: Convert to fraction form
    5,239.08/7,860.08 = 2,121.28/x
  3. Step 3: Cross multiply
    5,239.08x = 7,860.08 × 2,121.28
  4. Step 4: Simplify right side
    5,239.08x = 16,673,430.50
  5. Step 5: Solve for x
    x = 16,673,430.50/5,239.08
  6. Step 6: Final answer
    x = 3,182.51

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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.