Home / 2,750.45-3,791.20-2,151.93

Finding the Fourth Proportional to 2,750.45, 3,791.20 and 2,151.93

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Solution

The fourth proportional to 2,750.45, 3,791.20 and 2,151.93 is: 2,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.45 : 3,791.20 = 2,151.93 : x
  2. Step 2: Convert to fraction form
    2,750.45/3,791.20 = 2,151.93/x
  3. Step 3: Cross multiply
    2,750.45x = 3,791.20 × 2,151.93
  4. Step 4: Simplify right side
    2,750.45x = 8,158,386.26
  5. Step 5: Solve for x
    x = 8,158,386.26/2,750.45
  6. Step 6: Final answer
    x = 2,966.20

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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.