Home / 1,679.32-2,317.36-933.24

Finding the Fourth Proportional to 1,679.32, 2,317.36 and 933.24

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Solution

The fourth proportional to 1,679.32, 2,317.36 and 933.24 is: 1,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.32 : 2,317.36 = 933.24 : x
  2. Step 2: Convert to fraction form
    1,679.32/2,317.36 = 933.24/x
  3. Step 3: Cross multiply
    1,679.32x = 2,317.36 × 933.24
  4. Step 4: Simplify right side
    1,679.32x = 2,162,639.13
  5. Step 5: Solve for x
    x = 2,162,639.13/1,679.32
  6. Step 6: Final answer
    x = 1,287.80

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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.