Home / 2,811.08-3,879.12-1,552.10

Finding the Fourth Proportional to 2,811.08, 3,879.12 and 1,552.10

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Solution

The fourth proportional to 2,811.08, 3,879.12 and 1,552.10 is: 2,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.08 : 3,879.12 = 1,552.10 : x
  2. Step 2: Convert to fraction form
    2,811.08/3,879.12 = 1,552.10/x
  3. Step 3: Cross multiply
    2,811.08x = 3,879.12 × 1,552.10
  4. Step 4: Simplify right side
    2,811.08x = 6,020,782.15
  5. Step 5: Solve for x
    x = 6,020,782.15/2,811.08
  6. Step 6: Final answer
    x = 2,141.80

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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.