Home / 1,119.72-1,668.33-1,056.85

Finding the Fourth Proportional to 1,119.72, 1,668.33 and 1,056.85

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Solution

The fourth proportional to 1,119.72, 1,668.33 and 1,056.85 is: 1,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.72 : 1,668.33 = 1,056.85 : x
  2. Step 2: Convert to fraction form
    1,119.72/1,668.33 = 1,056.85/x
  3. Step 3: Cross multiply
    1,119.72x = 1,668.33 × 1,056.85
  4. Step 4: Simplify right side
    1,119.72x = 1,763,163.58
  5. Step 5: Solve for x
    x = 1,763,163.58/1,119.72
  6. Step 6: Final answer
    x = 1,574.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.