Home / 1,906.86-2,631.96-1,161.32

Finding the Fourth Proportional to 1,906.86, 2,631.96 and 1,161.32

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Solution

The fourth proportional to 1,906.86, 2,631.96 and 1,161.32 is: 1,602.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.86 : 2,631.96 = 1,161.32 : x
  2. Step 2: Convert to fraction form
    1,906.86/2,631.96 = 1,161.32/x
  3. Step 3: Cross multiply
    1,906.86x = 2,631.96 × 1,161.32
  4. Step 4: Simplify right side
    1,906.86x = 3,056,547.79
  5. Step 5: Solve for x
    x = 3,056,547.79/1,906.86
  6. Step 6: Final answer
    x = 1,602.92

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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.