Home / 2,880.40-3,975.24-1,761.84

Finding the Fourth Proportional to 2,880.40, 3,975.24 and 1,761.84

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Solution

The fourth proportional to 2,880.40, 3,975.24 and 1,761.84 is: 2,431.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.40 : 3,975.24 = 1,761.84 : x
  2. Step 2: Convert to fraction form
    2,880.40/3,975.24 = 1,761.84/x
  3. Step 3: Cross multiply
    2,880.40x = 3,975.24 × 1,761.84
  4. Step 4: Simplify right side
    2,880.40x = 7,003,736.84
  5. Step 5: Solve for x
    x = 7,003,736.84/2,880.40
  6. Step 6: Final answer
    x = 2,431.52

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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.