Home / 1,279.94-1,919.66-586.64

Finding the Fourth Proportional to 1,279.94, 1,919.66 and 586.64

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Solution

The fourth proportional to 1,279.94, 1,919.66 and 586.64 is: 879.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.94 : 1,919.66 = 586.64 : x
  2. Step 2: Convert to fraction form
    1,279.94/1,919.66 = 586.64/x
  3. Step 3: Cross multiply
    1,279.94x = 1,919.66 × 586.64
  4. Step 4: Simplify right side
    1,279.94x = 1,126,136.81
  5. Step 5: Solve for x
    x = 1,126,136.81/1,279.94
  6. Step 6: Final answer
    x = 879.84

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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.