Home / 5,292.13-7,939.84-2,172.39

Finding the Fourth Proportional to 5,292.13, 7,939.84 and 2,172.39

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Solution

The fourth proportional to 5,292.13, 7,939.84 and 2,172.39 is: 3,259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,292.13 : 7,939.84 = 2,172.39 : x
  2. Step 2: Convert to fraction form
    5,292.13/7,939.84 = 2,172.39/x
  3. Step 3: Cross multiply
    5,292.13x = 7,939.84 × 2,172.39
  4. Step 4: Simplify right side
    5,292.13x = 17,248,429.02
  5. Step 5: Solve for x
    x = 17,248,429.02/5,292.13
  6. Step 6: Final answer
    x = 3,259.26

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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.