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Finding the Fourth Proportional to 3,479.88, 5,220.31 and 1,014.87

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Solution

The fourth proportional to 3,479.88, 5,220.31 and 1,014.87 is: 1,522.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.88 : 5,220.31 = 1,014.87 : x
  2. Step 2: Convert to fraction form
    3,479.88/5,220.31 = 1,014.87/x
  3. Step 3: Cross multiply
    3,479.88x = 5,220.31 × 1,014.87
  4. Step 4: Simplify right side
    3,479.88x = 5,297,936.01
  5. Step 5: Solve for x
    x = 5,297,936.01/3,479.88
  6. Step 6: Final answer
    x = 1,522.45

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1.5x scale

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.