Home / 1,187.19-1,784.43-1,161.68

Finding the Fourth Proportional to 1,187.19, 1,784.43 and 1,161.68

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Solution

The fourth proportional to 1,187.19, 1,784.43 and 1,161.68 is: 1,746.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.19 : 1,784.43 = 1,161.68 : x
  2. Step 2: Convert to fraction form
    1,187.19/1,784.43 = 1,161.68/x
  3. Step 3: Cross multiply
    1,187.19x = 1,784.43 × 1,161.68
  4. Step 4: Simplify right side
    1,187.19x = 2,072,927.72
  5. Step 5: Solve for x
    x = 2,072,927.72/1,187.19
  6. Step 6: Final answer
    x = 1,746.08

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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.