Home / 3,576.80-5,364.60-979.12

Finding the Fourth Proportional to 3,576.80, 5,364.60 and 979.12

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Solution

The fourth proportional to 3,576.80, 5,364.60 and 979.12 is: 1,468.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,576.80 : 5,364.60 = 979.12 : x
  2. Step 2: Convert to fraction form
    3,576.80/5,364.60 = 979.12/x
  3. Step 3: Cross multiply
    3,576.80x = 5,364.60 × 979.12
  4. Step 4: Simplify right side
    3,576.80x = 5,252,587.15
  5. Step 5: Solve for x
    x = 5,252,587.15/3,576.80
  6. Step 6: Final answer
    x = 1,468.52

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1.5x scale

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.