Home / 2,808.89-4,211.01-1,120.45

Finding the Fourth Proportional to 2,808.89, 4,211.01 and 1,120.45

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Solution

The fourth proportional to 2,808.89, 4,211.01 and 1,120.45 is: 1,679.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.89 : 4,211.01 = 1,120.45 : x
  2. Step 2: Convert to fraction form
    2,808.89/4,211.01 = 1,120.45/x
  3. Step 3: Cross multiply
    2,808.89x = 4,211.01 × 1,120.45
  4. Step 4: Simplify right side
    2,808.89x = 4,718,215.63
  5. Step 5: Solve for x
    x = 4,718,215.63/2,808.89
  6. Step 6: Final answer
    x = 1,679.75

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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.