Home / 2,853.78-4,257.32-2,774.40

Finding the Fourth Proportional to 2,853.78, 4,257.32 and 2,774.40

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Solution

The fourth proportional to 2,853.78, 4,257.32 and 2,774.40 is: 4,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.78 : 4,257.32 = 2,774.40 : x
  2. Step 2: Convert to fraction form
    2,853.78/4,257.32 = 2,774.40/x
  3. Step 3: Cross multiply
    2,853.78x = 4,257.32 × 2,774.40
  4. Step 4: Simplify right side
    2,853.78x = 11,811,508.61
  5. Step 5: Solve for x
    x = 11,811,508.61/2,853.78
  6. Step 6: Final answer
    x = 4,138.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.