Home / 2,865.45-3,954.84-1,670.64

Finding the Fourth Proportional to 2,865.45, 3,954.84 and 1,670.64

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Solution

The fourth proportional to 2,865.45, 3,954.84 and 1,670.64 is: 2,305.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.45 : 3,954.84 = 1,670.64 : x
  2. Step 2: Convert to fraction form
    2,865.45/3,954.84 = 1,670.64/x
  3. Step 3: Cross multiply
    2,865.45x = 3,954.84 × 1,670.64
  4. Step 4: Simplify right side
    2,865.45x = 6,607,113.90
  5. Step 5: Solve for x
    x = 6,607,113.90/2,865.45
  6. Step 6: Final answer
    x = 2,305.79

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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.