Home / 4,913.79-6,778.45-3,400.71

Finding the Fourth Proportional to 4,913.79, 6,778.45 and 3,400.71

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Solution

The fourth proportional to 4,913.79, 6,778.45 and 3,400.71 is: 4,691.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.79 : 6,778.45 = 3,400.71 : x
  2. Step 2: Convert to fraction form
    4,913.79/6,778.45 = 3,400.71/x
  3. Step 3: Cross multiply
    4,913.79x = 6,778.45 × 3,400.71
  4. Step 4: Simplify right side
    4,913.79x = 23,051,542.70
  5. Step 5: Solve for x
    x = 23,051,542.70/4,913.79
  6. Step 6: Final answer
    x = 4,691.19

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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.