Home / 2,173.84-2,999.88-1,289.52

Finding the Fourth Proportional to 2,173.84, 2,999.88 and 1,289.52

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Solution

The fourth proportional to 2,173.84, 2,999.88 and 1,289.52 is: 1,779.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.84 : 2,999.88 = 1,289.52 : x
  2. Step 2: Convert to fraction form
    2,173.84/2,999.88 = 1,289.52/x
  3. Step 3: Cross multiply
    2,173.84x = 2,999.88 × 1,289.52
  4. Step 4: Simplify right side
    2,173.84x = 3,868,405.26
  5. Step 5: Solve for x
    x = 3,868,405.26/2,173.84
  6. Step 6: Final answer
    x = 1,779.53

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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.