Home / 2,173.13-2,999.03-1,289.01

Finding the Fourth Proportional to 2,173.13, 2,999.03 and 1,289.01

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Solution

The fourth proportional to 2,173.13, 2,999.03 and 1,289.01 is: 1,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.13 : 2,999.03 = 1,289.01 : x
  2. Step 2: Convert to fraction form
    2,173.13/2,999.03 = 1,289.01/x
  3. Step 3: Cross multiply
    2,173.13x = 2,999.03 × 1,289.01
  4. Step 4: Simplify right side
    2,173.13x = 3,865,784.46
  5. Step 5: Solve for x
    x = 3,865,784.46/2,173.13
  6. Step 6: Final answer
    x = 1,778.90

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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.