Home / 2,122.24-2,928.36-1,336.72

Finding the Fourth Proportional to 2,122.24, 2,928.36 and 1,336.72

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Solution

The fourth proportional to 2,122.24, 2,928.36 and 1,336.72 is: 1,844.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.24 : 2,928.36 = 1,336.72 : x
  2. Step 2: Convert to fraction form
    2,122.24/2,928.36 = 1,336.72/x
  3. Step 3: Cross multiply
    2,122.24x = 2,928.36 × 1,336.72
  4. Step 4: Simplify right side
    2,122.24x = 3,914,397.38
  5. Step 5: Solve for x
    x = 3,914,397.38/2,122.24
  6. Step 6: Final answer
    x = 1,844.46

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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.