Home / 1,679.30-2,317.44-933.28

Finding the Fourth Proportional to 1,679.30, 2,317.44 and 933.28

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Solution

The fourth proportional to 1,679.30, 2,317.44 and 933.28 is: 1,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.30 : 2,317.44 = 933.28 : x
  2. Step 2: Convert to fraction form
    1,679.30/2,317.44 = 933.28/x
  3. Step 3: Cross multiply
    1,679.30x = 2,317.44 × 933.28
  4. Step 4: Simplify right side
    1,679.30x = 2,162,820.40
  5. Step 5: Solve for x
    x = 2,162,820.40/1,679.30
  6. Step 6: Final answer
    x = 1,287.93

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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.