Home / 2,954.72-4,075.04-2,115.60

Finding the Fourth Proportional to 2,954.72, 4,075.04 and 2,115.60

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Solution

The fourth proportional to 2,954.72, 4,075.04 and 2,115.60 is: 2,917.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,954.72 : 4,075.04 = 2,115.60 : x
  2. Step 2: Convert to fraction form
    2,954.72/4,075.04 = 2,115.60/x
  3. Step 3: Cross multiply
    2,954.72x = 4,075.04 × 2,115.60
  4. Step 4: Simplify right side
    2,954.72x = 8,621,154.62
  5. Step 5: Solve for x
    x = 8,621,154.62/2,954.72
  6. Step 6: Final answer
    x = 2,917.76

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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.