Home / 3,829.58-5,279.93-3,120.63

Finding the Fourth Proportional to 3,829.58, 5,279.93 and 3,120.63

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Solution

The fourth proportional to 3,829.58, 5,279.93 and 3,120.63 is: 4,302.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,829.58 : 5,279.93 = 3,120.63 : x
  2. Step 2: Convert to fraction form
    3,829.58/5,279.93 = 3,120.63/x
  3. Step 3: Cross multiply
    3,829.58x = 5,279.93 × 3,120.63
  4. Step 4: Simplify right side
    3,829.58x = 16,476,701.81
  5. Step 5: Solve for x
    x = 16,476,701.81/3,829.58
  6. Step 6: Final answer
    x = 4,302.48

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1.5x scale

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.