Home / 2,911.08-4,019.46-1,863.72

Finding the Fourth Proportional to 2,911.08, 4,019.46 and 1,863.72

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Solution

The fourth proportional to 2,911.08, 4,019.46 and 1,863.72 is: 2,573.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.08 : 4,019.46 = 1,863.72 : x
  2. Step 2: Convert to fraction form
    2,911.08/4,019.46 = 1,863.72/x
  3. Step 3: Cross multiply
    2,911.08x = 4,019.46 × 1,863.72
  4. Step 4: Simplify right side
    2,911.08x = 7,491,147.99
  5. Step 5: Solve for x
    x = 7,491,147.99/2,911.08
  6. Step 6: Final answer
    x = 2,573.32

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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.