Home / 1,988.94-2,745.24-1,242.93

Finding the Fourth Proportional to 1,988.94, 2,745.24 and 1,242.93

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Solution

The fourth proportional to 1,988.94, 2,745.24 and 1,242.93 is: 1,715.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.94 : 2,745.24 = 1,242.93 : x
  2. Step 2: Convert to fraction form
    1,988.94/2,745.24 = 1,242.93/x
  3. Step 3: Cross multiply
    1,988.94x = 2,745.24 × 1,242.93
  4. Step 4: Simplify right side
    1,988.94x = 3,412,141.15
  5. Step 5: Solve for x
    x = 3,412,141.15/1,988.94
  6. Step 6: Final answer
    x = 1,715.56

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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.