Home / 2,122.28-2,929.08-1,283.09

Finding the Fourth Proportional to 2,122.28, 2,929.08 and 1,283.09

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Solution

The fourth proportional to 2,122.28, 2,929.08 and 1,283.09 is: 1,770.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.28 : 2,929.08 = 1,283.09 : x
  2. Step 2: Convert to fraction form
    2,122.28/2,929.08 = 1,283.09/x
  3. Step 3: Cross multiply
    2,122.28x = 2,929.08 × 1,283.09
  4. Step 4: Simplify right side
    2,122.28x = 3,758,258.61
  5. Step 5: Solve for x
    x = 3,758,258.61/2,122.28
  6. Step 6: Final answer
    x = 1,770.86

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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.