Home / 1,679.64-2,517.44-1,267.40

Finding the Fourth Proportional to 1,679.64, 2,517.44 and 1,267.40

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Solution

The fourth proportional to 1,679.64, 2,517.44 and 1,267.40 is: 1,899.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.64 : 2,517.44 = 1,267.40 : x
  2. Step 2: Convert to fraction form
    1,679.64/2,517.44 = 1,267.40/x
  3. Step 3: Cross multiply
    1,679.64x = 2,517.44 × 1,267.40
  4. Step 4: Simplify right side
    1,679.64x = 3,190,603.46
  5. Step 5: Solve for x
    x = 3,190,603.46/1,679.64
  6. Step 6: Final answer
    x = 1,899.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.