Home / 1,990.08-2,745.72-1,359.36

Finding the Fourth Proportional to 1,990.08, 2,745.72 and 1,359.36

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Solution

The fourth proportional to 1,990.08, 2,745.72 and 1,359.36 is: 1,875.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.08 : 2,745.72 = 1,359.36 : x
  2. Step 2: Convert to fraction form
    1,990.08/2,745.72 = 1,359.36/x
  3. Step 3: Cross multiply
    1,990.08x = 2,745.72 × 1,359.36
  4. Step 4: Simplify right side
    1,990.08x = 3,732,421.94
  5. Step 5: Solve for x
    x = 3,732,421.94/1,990.08
  6. Step 6: Final answer
    x = 1,875.51

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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.