Home / 6,918.72-10,378.62-3,453

Finding the Fourth Proportional to 6,918.72, 10,378.62 and 3,453

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Solution

The fourth proportional to 6,918.72, 10,378.62 and 3,453 is: 5,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.72 : 10,378.62 = 3,453 : x
  2. Step 2: Convert to fraction form
    6,918.72/10,378.62 = 3,453/x
  3. Step 3: Cross multiply
    6,918.72x = 10,378.62 × 3,453
  4. Step 4: Simplify right side
    6,918.72x = 35,837,374.86
  5. Step 5: Solve for x
    x = 35,837,374.86/6,918.72
  6. Step 6: Final answer
    x = 5,179.77

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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.