Home / 1,416.66-2,115.70-1,222.05

Finding the Fourth Proportional to 1,416.66, 2,115.70 and 1,222.05

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Solution

The fourth proportional to 1,416.66, 2,115.70 and 1,222.05 is: 1,825.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.66 : 2,115.70 = 1,222.05 : x
  2. Step 2: Convert to fraction form
    1,416.66/2,115.70 = 1,222.05/x
  3. Step 3: Cross multiply
    1,416.66x = 2,115.70 × 1,222.05
  4. Step 4: Simplify right side
    1,416.66x = 2,585,502.94
  5. Step 5: Solve for x
    x = 2,585,502.94/1,416.66
  6. Step 6: Final answer
    x = 1,825.07

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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.