Home / 2,907.39-4,012.73-1,728.55

Finding the Fourth Proportional to 2,907.39, 4,012.73 and 1,728.55

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Solution

The fourth proportional to 2,907.39, 4,012.73 and 1,728.55 is: 2,385.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.39 : 4,012.73 = 1,728.55 : x
  2. Step 2: Convert to fraction form
    2,907.39/4,012.73 = 1,728.55/x
  3. Step 3: Cross multiply
    2,907.39x = 4,012.73 × 1,728.55
  4. Step 4: Simplify right side
    2,907.39x = 6,936,204.44
  5. Step 5: Solve for x
    x = 6,936,204.44/2,907.39
  6. Step 6: Final answer
    x = 2,385.72

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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.