Home / 5,431.08-8,141.61-1,919.16

Finding the Fourth Proportional to 5,431.08, 8,141.61 and 1,919.16

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Solution

The fourth proportional to 5,431.08, 8,141.61 and 1,919.16 is: 2,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.08 : 8,141.61 = 1,919.16 : x
  2. Step 2: Convert to fraction form
    5,431.08/8,141.61 = 1,919.16/x
  3. Step 3: Cross multiply
    5,431.08x = 8,141.61 × 1,919.16
  4. Step 4: Simplify right side
    5,431.08x = 15,625,052.25
  5. Step 5: Solve for x
    x = 15,625,052.25/5,431.08
  6. Step 6: Final answer
    x = 2,876.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.