Home / 1,907.16-2,860.75-674.78

Finding the Fourth Proportional to 1,907.16, 2,860.75 and 674.78

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Solution

The fourth proportional to 1,907.16, 2,860.75 and 674.78 is: 1,012.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.16 : 2,860.75 = 674.78 : x
  2. Step 2: Convert to fraction form
    1,907.16/2,860.75 = 674.78/x
  3. Step 3: Cross multiply
    1,907.16x = 2,860.75 × 674.78
  4. Step 4: Simplify right side
    1,907.16x = 1,930,363.42
  5. Step 5: Solve for x
    x = 1,930,363.42/1,907.16
  6. Step 6: Final answer
    x = 1,012.17

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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.