Home / 3,122.93-4,308.68-1,778.45

Finding the Fourth Proportional to 3,122.93, 4,308.68 and 1,778.45

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Solution

The fourth proportional to 3,122.93, 4,308.68 and 1,778.45 is: 2,453.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.93 : 4,308.68 = 1,778.45 : x
  2. Step 2: Convert to fraction form
    3,122.93/4,308.68 = 1,778.45/x
  3. Step 3: Cross multiply
    3,122.93x = 4,308.68 × 1,778.45
  4. Step 4: Simplify right side
    3,122.93x = 7,662,754.85
  5. Step 5: Solve for x
    x = 7,662,754.85/3,122.93
  6. Step 6: Final answer
    x = 2,453.70

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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.