Home / 1,638.26-2,259.92-1,048.16

Finding the Fourth Proportional to 1,638.26, 2,259.92 and 1,048.16

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Solution

The fourth proportional to 1,638.26, 2,259.92 and 1,048.16 is: 1,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.26 : 2,259.92 = 1,048.16 : x
  2. Step 2: Convert to fraction form
    1,638.26/2,259.92 = 1,048.16/x
  3. Step 3: Cross multiply
    1,638.26x = 2,259.92 × 1,048.16
  4. Step 4: Simplify right side
    1,638.26x = 2,368,757.75
  5. Step 5: Solve for x
    x = 2,368,757.75/1,638.26
  6. Step 6: Final answer
    x = 1,445.90

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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.