Home / 2,972.05-4,101.37-1,645.74

Finding the Fourth Proportional to 2,972.05, 4,101.37 and 1,645.74

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Solution

The fourth proportional to 2,972.05, 4,101.37 and 1,645.74 is: 2,271.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.05 : 4,101.37 = 1,645.74 : x
  2. Step 2: Convert to fraction form
    2,972.05/4,101.37 = 1,645.74/x
  3. Step 3: Cross multiply
    2,972.05x = 4,101.37 × 1,645.74
  4. Step 4: Simplify right side
    2,972.05x = 6,749,784.55
  5. Step 5: Solve for x
    x = 6,749,784.55/2,972.05
  6. Step 6: Final answer
    x = 2,271.09

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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.