Home / 1,988.98-2,745.56-1,325.59

Finding the Fourth Proportional to 1,988.98, 2,745.56 and 1,325.59

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Solution

The fourth proportional to 1,988.98, 2,745.56 and 1,325.59 is: 1,829.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.98 : 2,745.56 = 1,325.59 : x
  2. Step 2: Convert to fraction form
    1,988.98/2,745.56 = 1,325.59/x
  3. Step 3: Cross multiply
    1,988.98x = 2,745.56 × 1,325.59
  4. Step 4: Simplify right side
    1,988.98x = 3,639,485.46
  5. Step 5: Solve for x
    x = 3,639,485.46/1,988.98
  6. Step 6: Final answer
    x = 1,829.82

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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.