Home / 2,107.33-2,907.90-1,223.32

Finding the Fourth Proportional to 2,107.33, 2,907.90 and 1,223.32

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Solution

The fourth proportional to 2,107.33, 2,907.90 and 1,223.32 is: 1,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.33 : 2,907.90 = 1,223.32 : x
  2. Step 2: Convert to fraction form
    2,107.33/2,907.90 = 1,223.32/x
  3. Step 3: Cross multiply
    2,107.33x = 2,907.90 × 1,223.32
  4. Step 4: Simplify right side
    2,107.33x = 3,557,290.41
  5. Step 5: Solve for x
    x = 3,557,290.41/2,107.33
  6. Step 6: Final answer
    x = 1,688.05

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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.