Home / 3,115.58-4,300.07-1,857.38

Finding the Fourth Proportional to 3,115.58, 4,300.07 and 1,857.38

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Solution

The fourth proportional to 3,115.58, 4,300.07 and 1,857.38 is: 2,563.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.58 : 4,300.07 = 1,857.38 : x
  2. Step 2: Convert to fraction form
    3,115.58/4,300.07 = 1,857.38/x
  3. Step 3: Cross multiply
    3,115.58x = 4,300.07 × 1,857.38
  4. Step 4: Simplify right side
    3,115.58x = 7,986,833.23
  5. Step 5: Solve for x
    x = 7,986,833.23/3,115.58
  6. Step 6: Final answer
    x = 2,563.52

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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.