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Finding the Fourth Proportional to 3,479.76, 5,218.84 and 1,014

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Solution

The fourth proportional to 3,479.76, 5,218.84 and 1,014 is: 1,520.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.76 : 5,218.84 = 1,014 : x
  2. Step 2: Convert to fraction form
    3,479.76/5,218.84 = 1,014/x
  3. Step 3: Cross multiply
    3,479.76x = 5,218.84 × 1,014
  4. Step 4: Simplify right side
    3,479.76x = 5,291,903.76
  5. Step 5: Solve for x
    x = 5,291,903.76/3,479.76
  6. Step 6: Final answer
    x = 1,520.77

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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.