Home / 2,907.62-4,012.60-1,728.70

Finding the Fourth Proportional to 2,907.62, 4,012.60 and 1,728.70

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Solution

The fourth proportional to 2,907.62, 4,012.60 and 1,728.70 is: 2,385.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.62 : 4,012.60 = 1,728.70 : x
  2. Step 2: Convert to fraction form
    2,907.62/4,012.60 = 1,728.70/x
  3. Step 3: Cross multiply
    2,907.62x = 4,012.60 × 1,728.70
  4. Step 4: Simplify right side
    2,907.62x = 6,936,581.62
  5. Step 5: Solve for x
    x = 6,936,581.62/2,907.62
  6. Step 6: Final answer
    x = 2,385.66

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1.5x scale

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.