Home / 2,827.20-3,901.64-2,117.79

Finding the Fourth Proportional to 2,827.20, 3,901.64 and 2,117.79

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Solution

The fourth proportional to 2,827.20, 3,901.64 and 2,117.79 is: 2,922.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,827.20 : 3,901.64 = 2,117.79 : x
  2. Step 2: Convert to fraction form
    2,827.20/3,901.64 = 2,117.79/x
  3. Step 3: Cross multiply
    2,827.20x = 3,901.64 × 2,117.79
  4. Step 4: Simplify right side
    2,827.20x = 8,262,874.10
  5. Step 5: Solve for x
    x = 8,262,874.10/2,827.20
  6. Step 6: Final answer
    x = 2,922.63

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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.