Home / 3,137.71-4,328.27-2,018.78

Finding the Fourth Proportional to 3,137.71, 4,328.27 and 2,018.78

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Solution

The fourth proportional to 3,137.71, 4,328.27 and 2,018.78 is: 2,784.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.71 : 4,328.27 = 2,018.78 : x
  2. Step 2: Convert to fraction form
    3,137.71/4,328.27 = 2,018.78/x
  3. Step 3: Cross multiply
    3,137.71x = 4,328.27 × 2,018.78
  4. Step 4: Simplify right side
    3,137.71x = 8,737,824.91
  5. Step 5: Solve for x
    x = 8,737,824.91/3,137.71
  6. Step 6: Final answer
    x = 2,784.78

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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.