Home / 1,284.40-1,926.60-1,231.06

Finding the Fourth Proportional to 1,284.40, 1,926.60 and 1,231.06

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Solution

The fourth proportional to 1,284.40, 1,926.60 and 1,231.06 is: 1,846.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.40 : 1,926.60 = 1,231.06 : x
  2. Step 2: Convert to fraction form
    1,284.40/1,926.60 = 1,231.06/x
  3. Step 3: Cross multiply
    1,284.40x = 1,926.60 × 1,231.06
  4. Step 4: Simplify right side
    1,284.40x = 2,371,760.20
  5. Step 5: Solve for x
    x = 2,371,760.20/1,284.40
  6. Step 6: Final answer
    x = 1,846.59

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.