Home / 1,409.67-1,958.76-1,394.46

Finding the Fourth Proportional to 1,409.67, 1,958.76 and 1,394.46

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Solution

The fourth proportional to 1,409.67, 1,958.76 and 1,394.46 is: 1,937.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.67 : 1,958.76 = 1,394.46 : x
  2. Step 2: Convert to fraction form
    1,409.67/1,958.76 = 1,394.46/x
  3. Step 3: Cross multiply
    1,409.67x = 1,958.76 × 1,394.46
  4. Step 4: Simplify right side
    1,409.67x = 2,731,412.47
  5. Step 5: Solve for x
    x = 2,731,412.47/1,409.67
  6. Step 6: Final answer
    x = 1,937.63

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.