Home / 1,778.25-2,665.79-1,153.67

Finding the Fourth Proportional to 1,778.25, 2,665.79 and 1,153.67

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Solution

The fourth proportional to 1,778.25, 2,665.79 and 1,153.67 is: 1,729.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.25 : 2,665.79 = 1,153.67 : x
  2. Step 2: Convert to fraction form
    1,778.25/2,665.79 = 1,153.67/x
  3. Step 3: Cross multiply
    1,778.25x = 2,665.79 × 1,153.67
  4. Step 4: Simplify right side
    1,778.25x = 3,075,436.18
  5. Step 5: Solve for x
    x = 3,075,436.18/1,778.25
  6. Step 6: Final answer
    x = 1,729.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.