Home / 3,137.70-4,329.91-1,878.49

Finding the Fourth Proportional to 3,137.70, 4,329.91 and 1,878.49

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Solution

The fourth proportional to 3,137.70, 4,329.91 and 1,878.49 is: 2,592.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.70 : 4,329.91 = 1,878.49 : x
  2. Step 2: Convert to fraction form
    3,137.70/4,329.91 = 1,878.49/x
  3. Step 3: Cross multiply
    3,137.70x = 4,329.91 × 1,878.49
  4. Step 4: Simplify right side
    3,137.70x = 8,133,692.64
  5. Step 5: Solve for x
    x = 8,133,692.64/3,137.70
  6. Step 6: Final answer
    x = 2,592.25

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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.