Home / 2,659.50-3,672-2,161.35

Finding the Fourth Proportional to 2,659.50, 3,672 and 2,161.35

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Solution

The fourth proportional to 2,659.50, 3,672 and 2,161.35 is: 2,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.50 : 3,672 = 2,161.35 : x
  2. Step 2: Convert to fraction form
    2,659.50/3,672 = 2,161.35/x
  3. Step 3: Cross multiply
    2,659.50x = 3,672 × 2,161.35
  4. Step 4: Simplify right side
    2,659.50x = 7,936,477.20
  5. Step 5: Solve for x
    x = 7,936,477.20/2,659.50
  6. Step 6: Final answer
    x = 2,984.20

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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.