Home / 2,722.60-4,075.80-1,629.10

Finding the Fourth Proportional to 2,722.60, 4,075.80 and 1,629.10

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Solution

The fourth proportional to 2,722.60, 4,075.80 and 1,629.10 is: 2,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.60 : 4,075.80 = 1,629.10 : x
  2. Step 2: Convert to fraction form
    2,722.60/4,075.80 = 1,629.10/x
  3. Step 3: Cross multiply
    2,722.60x = 4,075.80 × 1,629.10
  4. Step 4: Simplify right side
    2,722.60x = 6,639,885.78
  5. Step 5: Solve for x
    x = 6,639,885.78/2,722.60
  6. Step 6: Final answer
    x = 2,438.80

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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.