Home / 2,211.95-3,315.20-1,116.63

Finding the Fourth Proportional to 2,211.95, 3,315.20 and 1,116.63

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Solution

The fourth proportional to 2,211.95, 3,315.20 and 1,116.63 is: 1,673.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.95 : 3,315.20 = 1,116.63 : x
  2. Step 2: Convert to fraction form
    2,211.95/3,315.20 = 1,116.63/x
  3. Step 3: Cross multiply
    2,211.95x = 3,315.20 × 1,116.63
  4. Step 4: Simplify right side
    2,211.95x = 3,701,846.19
  5. Step 5: Solve for x
    x = 3,701,846.19/2,211.95
  6. Step 6: Final answer
    x = 1,673.56

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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.