Home / 3,317.36-4,578-1,919.84

Finding the Fourth Proportional to 3,317.36, 4,578 and 1,919.84

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Solution

The fourth proportional to 3,317.36, 4,578 and 1,919.84 is: 2,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.36 : 4,578 = 1,919.84 : x
  2. Step 2: Convert to fraction form
    3,317.36/4,578 = 1,919.84/x
  3. Step 3: Cross multiply
    3,317.36x = 4,578 × 1,919.84
  4. Step 4: Simplify right side
    3,317.36x = 8,789,027.52
  5. Step 5: Solve for x
    x = 8,789,027.52/3,317.36
  6. Step 6: Final answer
    x = 2,649.40

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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.