Home / 2,605.01-3,909.23-1,218.44

Finding the Fourth Proportional to 2,605.01, 3,909.23 and 1,218.44

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Solution

The fourth proportional to 2,605.01, 3,909.23 and 1,218.44 is: 1,828.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.01 : 3,909.23 = 1,218.44 : x
  2. Step 2: Convert to fraction form
    2,605.01/3,909.23 = 1,218.44/x
  3. Step 3: Cross multiply
    2,605.01x = 3,909.23 × 1,218.44
  4. Step 4: Simplify right side
    2,605.01x = 4,763,170.45
  5. Step 5: Solve for x
    x = 4,763,170.45/2,605.01
  6. Step 6: Final answer
    x = 1,828.47

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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.