Home / 1,231.35-1,697.27-1,071.44

Finding the Fourth Proportional to 1,231.35, 1,697.27 and 1,071.44

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Solution

The fourth proportional to 1,231.35, 1,697.27 and 1,071.44 is: 1,476.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.35 : 1,697.27 = 1,071.44 : x
  2. Step 2: Convert to fraction form
    1,231.35/1,697.27 = 1,071.44/x
  3. Step 3: Cross multiply
    1,231.35x = 1,697.27 × 1,071.44
  4. Step 4: Simplify right side
    1,231.35x = 1,818,509.13
  5. Step 5: Solve for x
    x = 1,818,509.13/1,231.35
  6. Step 6: Final answer
    x = 1,476.84

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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.