Home / 2,173.84-2,999.43-1,289.94

Finding the Fourth Proportional to 2,173.84, 2,999.43 and 1,289.94

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Solution

The fourth proportional to 2,173.84, 2,999.43 and 1,289.94 is: 1,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.84 : 2,999.43 = 1,289.94 : x
  2. Step 2: Convert to fraction form
    2,173.84/2,999.43 = 1,289.94/x
  3. Step 3: Cross multiply
    2,173.84x = 2,999.43 × 1,289.94
  4. Step 4: Simplify right side
    2,173.84x = 3,869,069.74
  5. Step 5: Solve for x
    x = 3,869,069.74/2,173.84
  6. Step 6: Final answer
    x = 1,779.83

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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.