Home / 1,279.61-1,764.65-1,184.15

Finding the Fourth Proportional to 1,279.61, 1,764.65 and 1,184.15

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Solution

The fourth proportional to 1,279.61, 1,764.65 and 1,184.15 is: 1,633.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.61 : 1,764.65 = 1,184.15 : x
  2. Step 2: Convert to fraction form
    1,279.61/1,764.65 = 1,184.15/x
  3. Step 3: Cross multiply
    1,279.61x = 1,764.65 × 1,184.15
  4. Step 4: Simplify right side
    1,279.61x = 2,089,608.79
  5. Step 5: Solve for x
    x = 2,089,608.79/1,279.61
  6. Step 6: Final answer
    x = 1,633.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.