Home / 3,146.94-4,342.78-1,730.65

Finding the Fourth Proportional to 3,146.94, 4,342.78 and 1,730.65

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Solution

The fourth proportional to 3,146.94, 4,342.78 and 1,730.65 is: 2,388.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.94 : 4,342.78 = 1,730.65 : x
  2. Step 2: Convert to fraction form
    3,146.94/4,342.78 = 1,730.65/x
  3. Step 3: Cross multiply
    3,146.94x = 4,342.78 × 1,730.65
  4. Step 4: Simplify right side
    3,146.94x = 7,515,832.21
  5. Step 5: Solve for x
    x = 7,515,832.21/3,146.94
  6. Step 6: Final answer
    x = 2,388.30

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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.