Home / 2,681.54-4,022.31-1,120.69

Finding the Fourth Proportional to 2,681.54, 4,022.31 and 1,120.69

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Solution

The fourth proportional to 2,681.54, 4,022.31 and 1,120.69 is: 1,681.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.54 : 4,022.31 = 1,120.69 : x
  2. Step 2: Convert to fraction form
    2,681.54/4,022.31 = 1,120.69/x
  3. Step 3: Cross multiply
    2,681.54x = 4,022.31 × 1,120.69
  4. Step 4: Simplify right side
    2,681.54x = 4,507,762.59
  5. Step 5: Solve for x
    x = 4,507,762.59/2,681.54
  6. Step 6: Final answer
    x = 1,681.04

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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.