Home / 1,679.40-2,317.48-933.32

Finding the Fourth Proportional to 1,679.40, 2,317.48 and 933.32

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Solution

The fourth proportional to 1,679.40, 2,317.48 and 933.32 is: 1,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.40 : 2,317.48 = 933.32 : x
  2. Step 2: Convert to fraction form
    1,679.40/2,317.48 = 933.32/x
  3. Step 3: Cross multiply
    1,679.40x = 2,317.48 × 933.32
  4. Step 4: Simplify right side
    1,679.40x = 2,162,950.43
  5. Step 5: Solve for x
    x = 2,162,950.43/1,679.40
  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.