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Finding the Fourth Proportional to 1,624.36, 2,431.74 and 1,075

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Solution

The fourth proportional to 1,624.36, 2,431.74 and 1,075 is: 1,609.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.36 : 2,431.74 = 1,075 : x
  2. Step 2: Convert to fraction form
    1,624.36/2,431.74 = 1,075/x
  3. Step 3: Cross multiply
    1,624.36x = 2,431.74 × 1,075
  4. Step 4: Simplify right side
    1,624.36x = 2,614,120.50
  5. Step 5: Solve for x
    x = 2,614,120.50/1,624.36
  6. Step 6: Final answer
    x = 1,609.32

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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.