Home / 1,988.55-2,745.36-1,359.99

Finding the Fourth Proportional to 1,988.55, 2,745.36 and 1,359.99

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Solution

The fourth proportional to 1,988.55, 2,745.36 and 1,359.99 is: 1,877.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.55 : 2,745.36 = 1,359.99 : x
  2. Step 2: Convert to fraction form
    1,988.55/2,745.36 = 1,359.99/x
  3. Step 3: Cross multiply
    1,988.55x = 2,745.36 × 1,359.99
  4. Step 4: Simplify right side
    1,988.55x = 3,733,662.15
  5. Step 5: Solve for x
    x = 3,733,662.15/1,988.55
  6. Step 6: Final answer
    x = 1,877.58

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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.