Home / 4,919.86-6,789.18-2,930.64

Finding the Fourth Proportional to 4,919.86, 6,789.18 and 2,930.64

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Solution

The fourth proportional to 4,919.86, 6,789.18 and 2,930.64 is: 4,044.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.86 : 6,789.18 = 2,930.64 : x
  2. Step 2: Convert to fraction form
    4,919.86/6,789.18 = 2,930.64/x
  3. Step 3: Cross multiply
    4,919.86x = 6,789.18 × 2,930.64
  4. Step 4: Simplify right side
    4,919.86x = 19,896,642.48
  5. Step 5: Solve for x
    x = 19,896,642.48/4,919.86
  6. Step 6: Final answer
    x = 4,044.15

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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.