Home / 2,261.20-3,391-1,075.10

Finding the Fourth Proportional to 2,261.20, 3,391 and 1,075.10

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Solution

The fourth proportional to 2,261.20, 3,391 and 1,075.10 is: 1,612.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.20 : 3,391 = 1,075.10 : x
  2. Step 2: Convert to fraction form
    2,261.20/3,391 = 1,075.10/x
  3. Step 3: Cross multiply
    2,261.20x = 3,391 × 1,075.10
  4. Step 4: Simplify right side
    2,261.20x = 3,645,664.10
  5. Step 5: Solve for x
    x = 3,645,664.10/2,261.20
  6. Step 6: Final answer
    x = 1,612.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.