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Finding the Fourth Proportional to 1,635.90, 2,448.90 and 1,269.06

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Solution

The fourth proportional to 1,635.90, 2,448.90 and 1,269.06 is: 1,899.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.90 : 2,448.90 = 1,269.06 : x
  2. Step 2: Convert to fraction form
    1,635.90/2,448.90 = 1,269.06/x
  3. Step 3: Cross multiply
    1,635.90x = 2,448.90 × 1,269.06
  4. Step 4: Simplify right side
    1,635.90x = 3,107,801.03
  5. Step 5: Solve for x
    x = 3,107,801.03/1,635.90
  6. Step 6: Final answer
    x = 1,899.75

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1.5x scale

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.