Home / 2,309.76-3,187.35-1,261.62

Finding the Fourth Proportional to 2,309.76, 3,187.35 and 1,261.62

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Solution

The fourth proportional to 2,309.76, 3,187.35 and 1,261.62 is: 1,740.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.76 : 3,187.35 = 1,261.62 : x
  2. Step 2: Convert to fraction form
    2,309.76/3,187.35 = 1,261.62/x
  3. Step 3: Cross multiply
    2,309.76x = 3,187.35 × 1,261.62
  4. Step 4: Simplify right side
    2,309.76x = 4,021,224.51
  5. Step 5: Solve for x
    x = 4,021,224.51/2,309.76
  6. Step 6: Final answer
    x = 1,740.97

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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.