Home / 1,216.22-1,814.20-1,139.67

Finding the Fourth Proportional to 1,216.22, 1,814.20 and 1,139.67

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Solution

The fourth proportional to 1,216.22, 1,814.20 and 1,139.67 is: 1,700.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216.22 : 1,814.20 = 1,139.67 : x
  2. Step 2: Convert to fraction form
    1,216.22/1,814.20 = 1,139.67/x
  3. Step 3: Cross multiply
    1,216.22x = 1,814.20 × 1,139.67
  4. Step 4: Simplify right side
    1,216.22x = 2,067,586.46
  5. Step 5: Solve for x
    x = 2,067,586.46/1,216.22
  6. Step 6: Final answer
    x = 1,700.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.