Home / 3,137.69-4,329.57-1,878.45

Finding the Fourth Proportional to 3,137.69, 4,329.57 and 1,878.45

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Solution

The fourth proportional to 3,137.69, 4,329.57 and 1,878.45 is: 2,591.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.69 : 4,329.57 = 1,878.45 : x
  2. Step 2: Convert to fraction form
    3,137.69/4,329.57 = 1,878.45/x
  3. Step 3: Cross multiply
    3,137.69x = 4,329.57 × 1,878.45
  4. Step 4: Simplify right side
    3,137.69x = 8,132,857.49
  5. Step 5: Solve for x
    x = 8,132,857.49/3,137.69
  6. Step 6: Final answer
    x = 2,591.99

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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.