Home / 3,919.12-5,403.72-3,588.64

Finding the Fourth Proportional to 3,919.12, 5,403.72 and 3,588.64

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Solution

The fourth proportional to 3,919.12, 5,403.72 and 3,588.64 is: 4,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.12 : 5,403.72 = 3,588.64 : x
  2. Step 2: Convert to fraction form
    3,919.12/5,403.72 = 3,588.64/x
  3. Step 3: Cross multiply
    3,919.12x = 5,403.72 × 3,588.64
  4. Step 4: Simplify right side
    3,919.12x = 19,392,005.74
  5. Step 5: Solve for x
    x = 19,392,005.74/3,919.12
  6. Step 6: Final answer
    x = 4,948.05

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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.