Home / 1,518.20-2,274.60-940.40

Finding the Fourth Proportional to 1,518.20, 2,274.60 and 940.40

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Solution

The fourth proportional to 1,518.20, 2,274.60 and 940.40 is: 1,408.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.20 : 2,274.60 = 940.40 : x
  2. Step 2: Convert to fraction form
    1,518.20/2,274.60 = 940.40/x
  3. Step 3: Cross multiply
    1,518.20x = 2,274.60 × 940.40
  4. Step 4: Simplify right side
    1,518.20x = 2,139,033.84
  5. Step 5: Solve for x
    x = 2,139,033.84/1,518.20
  6. Step 6: Final answer
    x = 1,408.93

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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.