Home / 1,257.12-1,883.66-1,236.67

Finding the Fourth Proportional to 1,257.12, 1,883.66 and 1,236.67

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Solution

The fourth proportional to 1,257.12, 1,883.66 and 1,236.67 is: 1,853.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.12 : 1,883.66 = 1,236.67 : x
  2. Step 2: Convert to fraction form
    1,257.12/1,883.66 = 1,236.67/x
  3. Step 3: Cross multiply
    1,257.12x = 1,883.66 × 1,236.67
  4. Step 4: Simplify right side
    1,257.12x = 2,329,454.92
  5. Step 5: Solve for x
    x = 2,329,454.92/1,257.12
  6. Step 6: Final answer
    x = 1,853.01

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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.