Home / 3,020.16-4,529.60-828.40

Finding the Fourth Proportional to 3,020.16, 4,529.60 and 828.40

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Solution

The fourth proportional to 3,020.16, 4,529.60 and 828.40 is: 1,242.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.16 : 4,529.60 = 828.40 : x
  2. Step 2: Convert to fraction form
    3,020.16/4,529.60 = 828.40/x
  3. Step 3: Cross multiply
    3,020.16x = 4,529.60 × 828.40
  4. Step 4: Simplify right side
    3,020.16x = 3,752,320.64
  5. Step 5: Solve for x
    x = 3,752,320.64/3,020.16
  6. Step 6: Final answer
    x = 1,242.42

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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.