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Finding the Fourth Proportional to 2,955.29, 4,078.22 and 1,679.40

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Solution

The fourth proportional to 2,955.29, 4,078.22 and 1,679.40 is: 2,317.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.29 : 4,078.22 = 1,679.40 : x
  2. Step 2: Convert to fraction form
    2,955.29/4,078.22 = 1,679.40/x
  3. Step 3: Cross multiply
    2,955.29x = 4,078.22 × 1,679.40
  4. Step 4: Simplify right side
    2,955.29x = 6,848,954.27
  5. Step 5: Solve for x
    x = 6,848,954.27/2,955.29
  6. Step 6: Final answer
    x = 2,317.53

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1.5x scale

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.