Home / 1,809.21-2,493.96-1,415.55

Finding the Fourth Proportional to 1,809.21, 2,493.96 and 1,415.55

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Solution

The fourth proportional to 1,809.21, 2,493.96 and 1,415.55 is: 1,951.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.21 : 2,493.96 = 1,415.55 : x
  2. Step 2: Convert to fraction form
    1,809.21/2,493.96 = 1,415.55/x
  3. Step 3: Cross multiply
    1,809.21x = 2,493.96 × 1,415.55
  4. Step 4: Simplify right side
    1,809.21x = 3,530,325.08
  5. Step 5: Solve for x
    x = 3,530,325.08/1,809.21
  6. Step 6: Final answer
    x = 1,951.31

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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.