Home / 1,431.15-2,146.94-700.77

Finding the Fourth Proportional to 1,431.15, 2,146.94 and 700.77

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Solution

The fourth proportional to 1,431.15, 2,146.94 and 700.77 is: 1,051.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431.15 : 2,146.94 = 700.77 : x
  2. Step 2: Convert to fraction form
    1,431.15/2,146.94 = 700.77/x
  3. Step 3: Cross multiply
    1,431.15x = 2,146.94 × 700.77
  4. Step 4: Simplify right side
    1,431.15x = 1,504,507.64
  5. Step 5: Solve for x
    x = 1,504,507.64/1,431.15
  6. Step 6: Final answer
    x = 1,051.26

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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.