Home / 1,286.12-1,927.26-1,056.64

Finding the Fourth Proportional to 1,286.12, 1,927.26 and 1,056.64

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Solution

The fourth proportional to 1,286.12, 1,927.26 and 1,056.64 is: 1,583.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.12 : 1,927.26 = 1,056.64 : x
  2. Step 2: Convert to fraction form
    1,286.12/1,927.26 = 1,056.64/x
  3. Step 3: Cross multiply
    1,286.12x = 1,927.26 × 1,056.64
  4. Step 4: Simplify right side
    1,286.12x = 2,036,420.01
  5. Step 5: Solve for x
    x = 2,036,420.01/1,286.12
  6. Step 6: Final answer
    x = 1,583.38

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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.