Home / 1,969.33-2,955.80-1,240.21

Finding the Fourth Proportional to 1,969.33, 2,955.80 and 1,240.21

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Solution

The fourth proportional to 1,969.33, 2,955.80 and 1,240.21 is: 1,861.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.33 : 2,955.80 = 1,240.21 : x
  2. Step 2: Convert to fraction form
    1,969.33/2,955.80 = 1,240.21/x
  3. Step 3: Cross multiply
    1,969.33x = 2,955.80 × 1,240.21
  4. Step 4: Simplify right side
    1,969.33x = 3,665,812.72
  5. Step 5: Solve for x
    x = 3,665,812.72/1,969.33
  6. Step 6: Final answer
    x = 1,861.45

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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.