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Finding the Fourth Proportional to 2,679.36, 3,697.29 and 1,684.95

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Solution

The fourth proportional to 2,679.36, 3,697.29 and 1,684.95 is: 2,325.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.36 : 3,697.29 = 1,684.95 : x
  2. Step 2: Convert to fraction form
    2,679.36/3,697.29 = 1,684.95/x
  3. Step 3: Cross multiply
    2,679.36x = 3,697.29 × 1,684.95
  4. Step 4: Simplify right side
    2,679.36x = 6,229,748.79
  5. Step 5: Solve for x
    x = 6,229,748.79/2,679.36
  6. Step 6: Final answer
    x = 2,325.09

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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.