Home / 1,571.10-2,168.14-872.52

Finding the Fourth Proportional to 1,571.10, 2,168.14 and 872.52

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Solution

The fourth proportional to 1,571.10, 2,168.14 and 872.52 is: 1,204.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.10 : 2,168.14 = 872.52 : x
  2. Step 2: Convert to fraction form
    1,571.10/2,168.14 = 872.52/x
  3. Step 3: Cross multiply
    1,571.10x = 2,168.14 × 872.52
  4. Step 4: Simplify right side
    1,571.10x = 1,891,745.51
  5. Step 5: Solve for x
    x = 1,891,745.51/1,571.10
  6. Step 6: Final answer
    x = 1,204.09

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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.