Home / 1,936.81-2,672.49-1,140.18

Finding the Fourth Proportional to 1,936.81, 2,672.49 and 1,140.18

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Solution

The fourth proportional to 1,936.81, 2,672.49 and 1,140.18 is: 1,573.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.81 : 2,672.49 = 1,140.18 : x
  2. Step 2: Convert to fraction form
    1,936.81/2,672.49 = 1,140.18/x
  3. Step 3: Cross multiply
    1,936.81x = 2,672.49 × 1,140.18
  4. Step 4: Simplify right side
    1,936.81x = 3,047,119.65
  5. Step 5: Solve for x
    x = 3,047,119.65/1,936.81
  6. Step 6: Final answer
    x = 1,573.27

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1.5x scale

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.