Home / 3,140.12-4,334.36-2,145.03

Finding the Fourth Proportional to 3,140.12, 4,334.36 and 2,145.03

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Solution

The fourth proportional to 3,140.12, 4,334.36 and 2,145.03 is: 2,960.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.12 : 4,334.36 = 2,145.03 : x
  2. Step 2: Convert to fraction form
    3,140.12/4,334.36 = 2,145.03/x
  3. Step 3: Cross multiply
    3,140.12x = 4,334.36 × 2,145.03
  4. Step 4: Simplify right side
    3,140.12x = 9,297,321.51
  5. Step 5: Solve for x
    x = 9,297,321.51/3,140.12
  6. Step 6: Final answer
    x = 2,960.82

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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.