Home / 1,989.02-2,745.06-1,203.08

Finding the Fourth Proportional to 1,989.02, 2,745.06 and 1,203.08

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Solution

The fourth proportional to 1,989.02, 2,745.06 and 1,203.08 is: 1,660.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.02 : 2,745.06 = 1,203.08 : x
  2. Step 2: Convert to fraction form
    1,989.02/2,745.06 = 1,203.08/x
  3. Step 3: Cross multiply
    1,989.02x = 2,745.06 × 1,203.08
  4. Step 4: Simplify right side
    1,989.02x = 3,302,526.78
  5. Step 5: Solve for x
    x = 3,302,526.78/1,989.02
  6. Step 6: Final answer
    x = 1,660.38

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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.