Home / 2,880.36-3,974.27-1,818.72

Finding the Fourth Proportional to 2,880.36, 3,974.27 and 1,818.72

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Solution

The fourth proportional to 2,880.36, 3,974.27 and 1,818.72 is: 2,509.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.36 : 3,974.27 = 1,818.72 : x
  2. Step 2: Convert to fraction form
    2,880.36/3,974.27 = 1,818.72/x
  3. Step 3: Cross multiply
    2,880.36x = 3,974.27 × 1,818.72
  4. Step 4: Simplify right side
    2,880.36x = 7,228,075.24
  5. Step 5: Solve for x
    x = 7,228,075.24/2,880.36
  6. Step 6: Final answer
    x = 2,509.43

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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.