Home / 1,910.79-2,866.18-1,261.37

Finding the Fourth Proportional to 1,910.79, 2,866.18 and 1,261.37

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Solution

The fourth proportional to 1,910.79, 2,866.18 and 1,261.37 is: 1,892.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.79 : 2,866.18 = 1,261.37 : x
  2. Step 2: Convert to fraction form
    1,910.79/2,866.18 = 1,261.37/x
  3. Step 3: Cross multiply
    1,910.79x = 2,866.18 × 1,261.37
  4. Step 4: Simplify right side
    1,910.79x = 3,615,292.83
  5. Step 5: Solve for x
    x = 3,615,292.83/1,910.79
  6. Step 6: Final answer
    x = 1,892.05

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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.