Home / 1,970.42-2,716.43-1,339.97

Finding the Fourth Proportional to 1,970.42, 2,716.43 and 1,339.97

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Solution

The fourth proportional to 1,970.42, 2,716.43 and 1,339.97 is: 1,847.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.42 : 2,716.43 = 1,339.97 : x
  2. Step 2: Convert to fraction form
    1,970.42/2,716.43 = 1,339.97/x
  3. Step 3: Cross multiply
    1,970.42x = 2,716.43 × 1,339.97
  4. Step 4: Simplify right side
    1,970.42x = 3,639,914.43
  5. Step 5: Solve for x
    x = 3,639,914.43/1,970.42
  6. Step 6: Final answer
    x = 1,847.28

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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.