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Finding the Fourth Proportional to 1,796.40, 2,479.32 and 1,679.28

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Solution

The fourth proportional to 1,796.40, 2,479.32 and 1,679.28 is: 2,317.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,796.40 : 2,479.32 = 1,679.28 : x
  2. Step 2: Convert to fraction form
    1,796.40/2,479.32 = 1,679.28/x
  3. Step 3: Cross multiply
    1,796.40x = 2,479.32 × 1,679.28
  4. Step 4: Simplify right side
    1,796.40x = 4,163,472.49
  5. Step 5: Solve for x
    x = 4,163,472.49/1,796.40
  6. Step 6: Final answer
    x = 2,317.68

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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.