Home / 1,416.06-1,949.40-1,218.42

Finding the Fourth Proportional to 1,416.06, 1,949.40 and 1,218.42

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Solution

The fourth proportional to 1,416.06, 1,949.40 and 1,218.42 is: 1,677.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.06 : 1,949.40 = 1,218.42 : x
  2. Step 2: Convert to fraction form
    1,416.06/1,949.40 = 1,218.42/x
  3. Step 3: Cross multiply
    1,416.06x = 1,949.40 × 1,218.42
  4. Step 4: Simplify right side
    1,416.06x = 2,375,187.95
  5. Step 5: Solve for x
    x = 2,375,187.95/1,416.06
  6. Step 6: Final answer
    x = 1,677.32

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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.