Home / 1,187.73-1,784.70-1,113.93

Finding the Fourth Proportional to 1,187.73, 1,784.70 and 1,113.93

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Solution

The fourth proportional to 1,187.73, 1,784.70 and 1,113.93 is: 1,673.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.73 : 1,784.70 = 1,113.93 : x
  2. Step 2: Convert to fraction form
    1,187.73/1,784.70 = 1,113.93/x
  3. Step 3: Cross multiply
    1,187.73x = 1,784.70 × 1,113.93
  4. Step 4: Simplify right side
    1,187.73x = 1,988,030.87
  5. Step 5: Solve for x
    x = 1,988,030.87/1,187.73
  6. Step 6: Final answer
    x = 1,673.81

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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.