Home / 2,114.21-3,171.80-1,140.29

Finding the Fourth Proportional to 2,114.21, 3,171.80 and 1,140.29

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Solution

The fourth proportional to 2,114.21, 3,171.80 and 1,140.29 is: 1,710.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.21 : 3,171.80 = 1,140.29 : x
  2. Step 2: Convert to fraction form
    2,114.21/3,171.80 = 1,140.29/x
  3. Step 3: Cross multiply
    2,114.21x = 3,171.80 × 1,140.29
  4. Step 4: Simplify right side
    2,114.21x = 3,616,766.12
  5. Step 5: Solve for x
    x = 3,616,766.12/2,114.21
  6. Step 6: Final answer
    x = 1,710.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.