Home / 1,275.51-1,910.66-1,231.50

Finding the Fourth Proportional to 1,275.51, 1,910.66 and 1,231.50

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Solution

The fourth proportional to 1,275.51, 1,910.66 and 1,231.50 is: 1,844.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.51 : 1,910.66 = 1,231.50 : x
  2. Step 2: Convert to fraction form
    1,275.51/1,910.66 = 1,231.50/x
  3. Step 3: Cross multiply
    1,275.51x = 1,910.66 × 1,231.50
  4. Step 4: Simplify right side
    1,275.51x = 2,352,978.80
  5. Step 5: Solve for x
    x = 2,352,978.80/1,275.51
  6. Step 6: Final answer
    x = 1,844.73

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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.