Home / 3,126.21-4,314.42-1,867.65

Finding the Fourth Proportional to 3,126.21, 4,314.42 and 1,867.65

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Solution

The fourth proportional to 3,126.21, 4,314.42 and 1,867.65 is: 2,577.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.21 : 4,314.42 = 1,867.65 : x
  2. Step 2: Convert to fraction form
    3,126.21/4,314.42 = 1,867.65/x
  3. Step 3: Cross multiply
    3,126.21x = 4,314.42 × 1,867.65
  4. Step 4: Simplify right side
    3,126.21x = 8,057,826.51
  5. Step 5: Solve for x
    x = 8,057,826.51/3,126.21
  6. Step 6: Final answer
    x = 2,577.51

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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.