Home / 1,516.30-2,091.44-927.12

Finding the Fourth Proportional to 1,516.30, 2,091.44 and 927.12

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Solution

The fourth proportional to 1,516.30, 2,091.44 and 927.12 is: 1,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.30 : 2,091.44 = 927.12 : x
  2. Step 2: Convert to fraction form
    1,516.30/2,091.44 = 927.12/x
  3. Step 3: Cross multiply
    1,516.30x = 2,091.44 × 927.12
  4. Step 4: Simplify right side
    1,516.30x = 1,939,015.85
  5. Step 5: Solve for x
    x = 1,939,015.85/1,516.30
  6. Step 6: Final answer
    x = 1,278.78

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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.