Home / 3,105.16-4,284.93-1,778.56

Finding the Fourth Proportional to 3,105.16, 4,284.93 and 1,778.56

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Solution

The fourth proportional to 3,105.16, 4,284.93 and 1,778.56 is: 2,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.16 : 4,284.93 = 1,778.56 : x
  2. Step 2: Convert to fraction form
    3,105.16/4,284.93 = 1,778.56/x
  3. Step 3: Cross multiply
    3,105.16x = 4,284.93 × 1,778.56
  4. Step 4: Simplify right side
    3,105.16x = 7,621,005.10
  5. Step 5: Solve for x
    x = 7,621,005.10/3,105.16
  6. Step 6: Final answer
    x = 2,454.30

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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.