Home / 2,880.08-3,974.20-1,621.12

Finding the Fourth Proportional to 2,880.08, 3,974.20 and 1,621.12

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Solution

The fourth proportional to 2,880.08, 3,974.20 and 1,621.12 is: 2,236.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.08 : 3,974.20 = 1,621.12 : x
  2. Step 2: Convert to fraction form
    2,880.08/3,974.20 = 1,621.12/x
  3. Step 3: Cross multiply
    2,880.08x = 3,974.20 × 1,621.12
  4. Step 4: Simplify right side
    2,880.08x = 6,442,635.23
  5. Step 5: Solve for x
    x = 6,442,635.23/2,880.08
  6. Step 6: Final answer
    x = 2,236.96

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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.