Home / 2,114.91-3,172.37-1,140.89

Finding the Fourth Proportional to 2,114.91, 3,172.37 and 1,140.89

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Solution

The fourth proportional to 2,114.91, 3,172.37 and 1,140.89 is: 1,711.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.91 : 3,172.37 = 1,140.89 : x
  2. Step 2: Convert to fraction form
    2,114.91/3,172.37 = 1,140.89/x
  3. Step 3: Cross multiply
    2,114.91x = 3,172.37 × 1,140.89
  4. Step 4: Simplify right side
    2,114.91x = 3,619,303.64
  5. Step 5: Solve for x
    x = 3,619,303.64/2,114.91
  6. Step 6: Final answer
    x = 1,711.33

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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.