Home / 2,681.33-4,021.50-1,120.91

Finding the Fourth Proportional to 2,681.33, 4,021.50 and 1,120.91

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Solution

The fourth proportional to 2,681.33, 4,021.50 and 1,120.91 is: 1,681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.33 : 4,021.50 = 1,120.91 : x
  2. Step 2: Convert to fraction form
    2,681.33/4,021.50 = 1,120.91/x
  3. Step 3: Cross multiply
    2,681.33x = 4,021.50 × 1,120.91
  4. Step 4: Simplify right side
    2,681.33x = 4,507,739.57
  5. Step 5: Solve for x
    x = 4,507,739.57/2,681.33
  6. Step 6: Final answer
    x = 1,681.16

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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.