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Finding the Fourth Proportional to 2,673.66, 3,690.42 and 1,679.28

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Solution

The fourth proportional to 2,673.66, 3,690.42 and 1,679.28 is: 2,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,673.66 : 3,690.42 = 1,679.28 : x
  2. Step 2: Convert to fraction form
    2,673.66/3,690.42 = 1,679.28/x
  3. Step 3: Cross multiply
    2,673.66x = 3,690.42 × 1,679.28
  4. Step 4: Simplify right side
    2,673.66x = 6,197,248.50
  5. Step 5: Solve for x
    x = 6,197,248.50/2,673.66
  6. Step 6: Final answer
    x = 2,317.89

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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.