Home / 5,278.85-7,918.53-1,383.26

Finding the Fourth Proportional to 5,278.85, 7,918.53 and 1,383.26

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Solution

The fourth proportional to 5,278.85, 7,918.53 and 1,383.26 is: 2,074.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.85 : 7,918.53 = 1,383.26 : x
  2. Step 2: Convert to fraction form
    5,278.85/7,918.53 = 1,383.26/x
  3. Step 3: Cross multiply
    5,278.85x = 7,918.53 × 1,383.26
  4. Step 4: Simplify right side
    5,278.85x = 10,953,385.81
  5. Step 5: Solve for x
    x = 10,953,385.81/5,278.85
  6. Step 6: Final answer
    x = 2,074.96

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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.