Home / 1,516.20-2,274.21-891.84

Finding the Fourth Proportional to 1,516.20, 2,274.21 and 891.84

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Solution

The fourth proportional to 1,516.20, 2,274.21 and 891.84 is: 1,337.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.20 : 2,274.21 = 891.84 : x
  2. Step 2: Convert to fraction form
    1,516.20/2,274.21 = 891.84/x
  3. Step 3: Cross multiply
    1,516.20x = 2,274.21 × 891.84
  4. Step 4: Simplify right side
    1,516.20x = 2,028,239.97
  5. Step 5: Solve for x
    x = 2,028,239.97/1,516.20
  6. Step 6: Final answer
    x = 1,337.71

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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.