Home / 2,972.15-4,101.66-1,645.77

Finding the Fourth Proportional to 2,972.15, 4,101.66 and 1,645.77

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Solution

The fourth proportional to 2,972.15, 4,101.66 and 1,645.77 is: 2,271.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.15 : 4,101.66 = 1,645.77 : x
  2. Step 2: Convert to fraction form
    2,972.15/4,101.66 = 1,645.77/x
  3. Step 3: Cross multiply
    2,972.15x = 4,101.66 × 1,645.77
  4. Step 4: Simplify right side
    2,972.15x = 6,750,388.98
  5. Step 5: Solve for x
    x = 6,750,388.98/2,972.15
  6. Step 6: Final answer
    x = 2,271.21

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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.