Home / 3,115.30-4,299-1,698.95

Finding the Fourth Proportional to 3,115.30, 4,299 and 1,698.95

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Solution

The fourth proportional to 3,115.30, 4,299 and 1,698.95 is: 2,344.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.30 : 4,299 = 1,698.95 : x
  2. Step 2: Convert to fraction form
    3,115.30/4,299 = 1,698.95/x
  3. Step 3: Cross multiply
    3,115.30x = 4,299 × 1,698.95
  4. Step 4: Simplify right side
    3,115.30x = 7,303,786.05
  5. Step 5: Solve for x
    x = 7,303,786.05/3,115.30
  6. Step 6: Final answer
    x = 2,344.49

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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.