Home / 2,830.40-4,245.51-1,369.70

Finding the Fourth Proportional to 2,830.40, 4,245.51 and 1,369.70

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Solution

The fourth proportional to 2,830.40, 4,245.51 and 1,369.70 is: 2,054.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.40 : 4,245.51 = 1,369.70 : x
  2. Step 2: Convert to fraction form
    2,830.40/4,245.51 = 1,369.70/x
  3. Step 3: Cross multiply
    2,830.40x = 4,245.51 × 1,369.70
  4. Step 4: Simplify right side
    2,830.40x = 5,815,075.05
  5. Step 5: Solve for x
    x = 5,815,075.05/2,830.40
  6. Step 6: Final answer
    x = 2,054.51

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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.