Home / 1,400.31-1,927.26-1,299.67

Finding the Fourth Proportional to 1,400.31, 1,927.26 and 1,299.67

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Solution

The fourth proportional to 1,400.31, 1,927.26 and 1,299.67 is: 1,788.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.31 : 1,927.26 = 1,299.67 : x
  2. Step 2: Convert to fraction form
    1,400.31/1,927.26 = 1,299.67/x
  3. Step 3: Cross multiply
    1,400.31x = 1,927.26 × 1,299.67
  4. Step 4: Simplify right side
    1,400.31x = 2,504,797.19
  5. Step 5: Solve for x
    x = 2,504,797.19/1,400.31
  6. Step 6: Final answer
    x = 1,788.74

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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.