Home / 2,004.90-2,767.50-1,218.75

Finding the Fourth Proportional to 2,004.90, 2,767.50 and 1,218.75

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Solution

The fourth proportional to 2,004.90, 2,767.50 and 1,218.75 is: 1,682.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,004.90 : 2,767.50 = 1,218.75 : x
  2. Step 2: Convert to fraction form
    2,004.90/2,767.50 = 1,218.75/x
  3. Step 3: Cross multiply
    2,004.90x = 2,767.50 × 1,218.75
  4. Step 4: Simplify right side
    2,004.90x = 3,372,890.63
  5. Step 5: Solve for x
    x = 3,372,890.63/2,004.90
  6. Step 6: Final answer
    x = 1,682.32

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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.