Home / 2,114.07-3,171.47-727.55

Finding the Fourth Proportional to 2,114.07, 3,171.47 and 727.55

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Solution

The fourth proportional to 2,114.07, 3,171.47 and 727.55 is: 1,091.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.07 : 3,171.47 = 727.55 : x
  2. Step 2: Convert to fraction form
    2,114.07/3,171.47 = 727.55/x
  3. Step 3: Cross multiply
    2,114.07x = 3,171.47 × 727.55
  4. Step 4: Simplify right side
    2,114.07x = 2,307,403.00
  5. Step 5: Solve for x
    x = 2,307,403.00/2,114.07
  6. Step 6: Final answer
    x = 1,091.45

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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.