Home / 1,187.24-1,783.96-1,113.44

Finding the Fourth Proportional to 1,187.24, 1,783.96 and 1,113.44

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Solution

The fourth proportional to 1,187.24, 1,783.96 and 1,113.44 is: 1,673.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.24 : 1,783.96 = 1,113.44 : x
  2. Step 2: Convert to fraction form
    1,187.24/1,783.96 = 1,113.44/x
  3. Step 3: Cross multiply
    1,187.24x = 1,783.96 × 1,113.44
  4. Step 4: Simplify right side
    1,187.24x = 1,986,332.42
  5. Step 5: Solve for x
    x = 1,986,332.42/1,187.24
  6. Step 6: Final answer
    x = 1,673.07

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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.