Home / 1,679.38-2,317.40-933.29

Finding the Fourth Proportional to 1,679.38, 2,317.40 and 933.29

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Solution

The fourth proportional to 1,679.38, 2,317.40 and 933.29 is: 1,287.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.38 : 2,317.40 = 933.29 : x
  2. Step 2: Convert to fraction form
    1,679.38/2,317.40 = 933.29/x
  3. Step 3: Cross multiply
    1,679.38x = 2,317.40 × 933.29
  4. Step 4: Simplify right side
    1,679.38x = 2,162,809.71
  5. Step 5: Solve for x
    x = 2,162,809.71/1,679.38
  6. Step 6: Final answer
    x = 1,287.86

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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.