Home / 1,396.07-1,927.46-1,246.43

Finding the Fourth Proportional to 1,396.07, 1,927.46 and 1,246.43

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Solution

The fourth proportional to 1,396.07, 1,927.46 and 1,246.43 is: 1,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.07 : 1,927.46 = 1,246.43 : x
  2. Step 2: Convert to fraction form
    1,396.07/1,927.46 = 1,246.43/x
  3. Step 3: Cross multiply
    1,396.07x = 1,927.46 × 1,246.43
  4. Step 4: Simplify right side
    1,396.07x = 2,402,444.67
  5. Step 5: Solve for x
    x = 2,402,444.67/1,396.07
  6. Step 6: Final answer
    x = 1,720.87

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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.