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Finding the Fourth Proportional to 3,579.02, 5,367.84 and 1,113.86

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Solution

The fourth proportional to 3,579.02, 5,367.84 and 1,113.86 is: 1,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.02 : 5,367.84 = 1,113.86 : x
  2. Step 2: Convert to fraction form
    3,579.02/5,367.84 = 1,113.86/x
  3. Step 3: Cross multiply
    3,579.02x = 5,367.84 × 1,113.86
  4. Step 4: Simplify right side
    3,579.02x = 5,979,031.51
  5. Step 5: Solve for x
    x = 5,979,031.51/3,579.02
  6. Step 6: Final answer
    x = 1,670.58

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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.