Home / 2,880.24-3,974.64-1,621.38

Finding the Fourth Proportional to 2,880.24, 3,974.64 and 1,621.38

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Solution

The fourth proportional to 2,880.24, 3,974.64 and 1,621.38 is: 2,237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.24 : 3,974.64 = 1,621.38 : x
  2. Step 2: Convert to fraction form
    2,880.24/3,974.64 = 1,621.38/x
  3. Step 3: Cross multiply
    2,880.24x = 3,974.64 × 1,621.38
  4. Step 4: Simplify right side
    2,880.24x = 6,444,401.80
  5. Step 5: Solve for x
    x = 6,444,401.80/2,880.24
  6. Step 6: Final answer
    x = 2,237.45

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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.