Home / 2,979.72-4,469.76-1,031.64

Finding the Fourth Proportional to 2,979.72, 4,469.76 and 1,031.64

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Solution

The fourth proportional to 2,979.72, 4,469.76 and 1,031.64 is: 1,547.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.72 : 4,469.76 = 1,031.64 : x
  2. Step 2: Convert to fraction form
    2,979.72/4,469.76 = 1,031.64/x
  3. Step 3: Cross multiply
    2,979.72x = 4,469.76 × 1,031.64
  4. Step 4: Simplify right side
    2,979.72x = 4,611,183.21
  5. Step 5: Solve for x
    x = 4,611,183.21/2,979.72
  6. Step 6: Final answer
    x = 1,547.52

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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.