Home / 5,178.63-7,144.68-3,983.99

Finding the Fourth Proportional to 5,178.63, 7,144.68 and 3,983.99

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Solution

The fourth proportional to 5,178.63, 7,144.68 and 3,983.99 is: 5,496.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.63 : 7,144.68 = 3,983.99 : x
  2. Step 2: Convert to fraction form
    5,178.63/7,144.68 = 3,983.99/x
  3. Step 3: Cross multiply
    5,178.63x = 7,144.68 × 3,983.99
  4. Step 4: Simplify right side
    5,178.63x = 28,464,297.95
  5. Step 5: Solve for x
    x = 28,464,297.95/5,178.63
  6. Step 6: Final answer
    x = 5,496.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.