Home / 2,678.25-3,694.98-1,558.63

Finding the Fourth Proportional to 2,678.25, 3,694.98 and 1,558.63

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Solution

The fourth proportional to 2,678.25, 3,694.98 and 1,558.63 is: 2,150.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.25 : 3,694.98 = 1,558.63 : x
  2. Step 2: Convert to fraction form
    2,678.25/3,694.98 = 1,558.63/x
  3. Step 3: Cross multiply
    2,678.25x = 3,694.98 × 1,558.63
  4. Step 4: Simplify right side
    2,678.25x = 5,759,106.68
  5. Step 5: Solve for x
    x = 5,759,106.68/2,678.25
  6. Step 6: Final answer
    x = 2,150.32

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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.