Home / 2,122.34-2,928.91-1,282.88

Finding the Fourth Proportional to 2,122.34, 2,928.91 and 1,282.88

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Solution

The fourth proportional to 2,122.34, 2,928.91 and 1,282.88 is: 1,770.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.34 : 2,928.91 = 1,282.88 : x
  2. Step 2: Convert to fraction form
    2,122.34/2,928.91 = 1,282.88/x
  3. Step 3: Cross multiply
    2,122.34x = 2,928.91 × 1,282.88
  4. Step 4: Simplify right side
    2,122.34x = 3,757,440.06
  5. Step 5: Solve for x
    x = 3,757,440.06/2,122.34
  6. Step 6: Final answer
    x = 1,770.42

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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.