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Finding the Fourth Proportional to 1,907.36, 2,860.86 and 674.72

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Solution

The fourth proportional to 1,907.36, 2,860.86 and 674.72 is: 1,012.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.36 : 2,860.86 = 674.72 : x
  2. Step 2: Convert to fraction form
    1,907.36/2,860.86 = 674.72/x
  3. Step 3: Cross multiply
    1,907.36x = 2,860.86 × 674.72
  4. Step 4: Simplify right side
    1,907.36x = 1,930,279.46
  5. Step 5: Solve for x
    x = 1,930,279.46/1,907.36
  6. Step 6: Final answer
    x = 1,012.02

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1.5x scale

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.