Home / 1,679.20-2,317.34-933.19

Finding the Fourth Proportional to 1,679.20, 2,317.34 and 933.19

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Solution

The fourth proportional to 1,679.20, 2,317.34 and 933.19 is: 1,287.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.20 : 2,317.34 = 933.19 : x
  2. Step 2: Convert to fraction form
    1,679.20/2,317.34 = 933.19/x
  3. Step 3: Cross multiply
    1,679.20x = 2,317.34 × 933.19
  4. Step 4: Simplify right side
    1,679.20x = 2,162,515.05
  5. Step 5: Solve for x
    x = 2,162,515.05/1,679.20
  6. Step 6: Final answer
    x = 1,287.83

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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.