Home / 2,087.31-2,880.50-1,203.11

Finding the Fourth Proportional to 2,087.31, 2,880.50 and 1,203.11

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Solution

The fourth proportional to 2,087.31, 2,880.50 and 1,203.11 is: 1,660.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.31 : 2,880.50 = 1,203.11 : x
  2. Step 2: Convert to fraction form
    2,087.31/2,880.50 = 1,203.11/x
  3. Step 3: Cross multiply
    2,087.31x = 2,880.50 × 1,203.11
  4. Step 4: Simplify right side
    2,087.31x = 3,465,558.36
  5. Step 5: Solve for x
    x = 3,465,558.36/2,087.31
  6. Step 6: Final answer
    x = 1,660.30

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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.