Home / 5,279.51-7,916.26-2,155.86

Finding the Fourth Proportional to 5,279.51, 7,916.26 and 2,155.86

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Solution

The fourth proportional to 5,279.51, 7,916.26 and 2,155.86 is: 3,232.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.51 : 7,916.26 = 2,155.86 : x
  2. Step 2: Convert to fraction form
    5,279.51/7,916.26 = 2,155.86/x
  3. Step 3: Cross multiply
    5,279.51x = 7,916.26 × 2,155.86
  4. Step 4: Simplify right side
    5,279.51x = 17,066,348.28
  5. Step 5: Solve for x
    x = 17,066,348.28/5,279.51
  6. Step 6: Final answer
    x = 3,232.56

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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.