Home / 2,774.39-3,827.66-1,780.11

Finding the Fourth Proportional to 2,774.39, 3,827.66 and 1,780.11

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Solution

The fourth proportional to 2,774.39, 3,827.66 and 1,780.11 is: 2,455.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.39 : 3,827.66 = 1,780.11 : x
  2. Step 2: Convert to fraction form
    2,774.39/3,827.66 = 1,780.11/x
  3. Step 3: Cross multiply
    2,774.39x = 3,827.66 × 1,780.11
  4. Step 4: Simplify right side
    2,774.39x = 6,813,646.94
  5. Step 5: Solve for x
    x = 6,813,646.94/2,774.39
  6. Step 6: Final answer
    x = 2,455.91

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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.