Home / 1,911.57-2,867.36-613.14

Finding the Fourth Proportional to 1,911.57, 2,867.36 and 613.14

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Solution

The fourth proportional to 1,911.57, 2,867.36 and 613.14 is: 919.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.57 : 2,867.36 = 613.14 : x
  2. Step 2: Convert to fraction form
    1,911.57/2,867.36 = 613.14/x
  3. Step 3: Cross multiply
    1,911.57x = 2,867.36 × 613.14
  4. Step 4: Simplify right side
    1,911.57x = 1,758,090.04
  5. Step 5: Solve for x
    x = 1,758,090.04/1,911.57
  6. Step 6: Final answer
    x = 919.71

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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.