Home / 2,811.24-4,216.74-1,887.18

Finding the Fourth Proportional to 2,811.24, 4,216.74 and 1,887.18

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Solution

The fourth proportional to 2,811.24, 4,216.74 and 1,887.18 is: 2,830.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.24 : 4,216.74 = 1,887.18 : x
  2. Step 2: Convert to fraction form
    2,811.24/4,216.74 = 1,887.18/x
  3. Step 3: Cross multiply
    2,811.24x = 4,216.74 × 1,887.18
  4. Step 4: Simplify right side
    2,811.24x = 7,957,747.39
  5. Step 5: Solve for x
    x = 7,957,747.39/2,811.24
  6. Step 6: Final answer
    x = 2,830.69

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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.