Home / 4,913.16-6,780.86-2,789.21

Finding the Fourth Proportional to 4,913.16, 6,780.86 and 2,789.21

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Solution

The fourth proportional to 4,913.16, 6,780.86 and 2,789.21 is: 3,849.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.16 : 6,780.86 = 2,789.21 : x
  2. Step 2: Convert to fraction form
    4,913.16/6,780.86 = 2,789.21/x
  3. Step 3: Cross multiply
    4,913.16x = 6,780.86 × 2,789.21
  4. Step 4: Simplify right side
    4,913.16x = 18,913,255.99
  5. Step 5: Solve for x
    x = 18,913,255.99/4,913.16
  6. Step 6: Final answer
    x = 3,849.51

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1.5x scale

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.