Home / 1,729.38-2,382.08-1,355.67

Finding the Fourth Proportional to 1,729.38, 2,382.08 and 1,355.67

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Solution

The fourth proportional to 1,729.38, 2,382.08 and 1,355.67 is: 1,867.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.38 : 2,382.08 = 1,355.67 : x
  2. Step 2: Convert to fraction form
    1,729.38/2,382.08 = 1,355.67/x
  3. Step 3: Cross multiply
    1,729.38x = 2,382.08 × 1,355.67
  4. Step 4: Simplify right side
    1,729.38x = 3,229,307.62
  5. Step 5: Solve for x
    x = 3,229,307.62/1,729.38
  6. Step 6: Final answer
    x = 1,867.32

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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.