Home / 2,120.60-2,926.28-1,236.36

Finding the Fourth Proportional to 2,120.60, 2,926.28 and 1,236.36

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Solution

The fourth proportional to 2,120.60, 2,926.28 and 1,236.36 is: 1,706.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.60 : 2,926.28 = 1,236.36 : x
  2. Step 2: Convert to fraction form
    2,120.60/2,926.28 = 1,236.36/x
  3. Step 3: Cross multiply
    2,120.60x = 2,926.28 × 1,236.36
  4. Step 4: Simplify right side
    2,120.60x = 3,617,935.54
  5. Step 5: Solve for x
    x = 3,617,935.54/2,120.60
  6. Step 6: Final answer
    x = 1,706.09

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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.