Home / 2,173.75-2,999.71-1,289.53

Finding the Fourth Proportional to 2,173.75, 2,999.71 and 1,289.53

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Solution

The fourth proportional to 2,173.75, 2,999.71 and 1,289.53 is: 1,779.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.75 : 2,999.71 = 1,289.53 : x
  2. Step 2: Convert to fraction form
    2,173.75/2,999.71 = 1,289.53/x
  3. Step 3: Cross multiply
    2,173.75x = 2,999.71 × 1,289.53
  4. Step 4: Simplify right side
    2,173.75x = 3,868,221.40
  5. Step 5: Solve for x
    x = 3,868,221.40/2,173.75
  6. Step 6: Final answer
    x = 1,779.52

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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.