Home / 2,151.07-2,963.36-2,021.87

Finding the Fourth Proportional to 2,151.07, 2,963.36 and 2,021.87

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Solution

The fourth proportional to 2,151.07, 2,963.36 and 2,021.87 is: 2,785.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.07 : 2,963.36 = 2,021.87 : x
  2. Step 2: Convert to fraction form
    2,151.07/2,963.36 = 2,021.87/x
  3. Step 3: Cross multiply
    2,151.07x = 2,963.36 × 2,021.87
  4. Step 4: Simplify right side
    2,151.07x = 5,991,541.15
  5. Step 5: Solve for x
    x = 5,991,541.15/2,151.07
  6. Step 6: Final answer
    x = 2,785.38

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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.