Home / 5,120.25-7,065.95-3,025.65

Finding the Fourth Proportional to 5,120.25, 7,065.95 and 3,025.65

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Solution

The fourth proportional to 5,120.25, 7,065.95 and 3,025.65 is: 4,175.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.25 : 7,065.95 = 3,025.65 : x
  2. Step 2: Convert to fraction form
    5,120.25/7,065.95 = 3,025.65/x
  3. Step 3: Cross multiply
    5,120.25x = 7,065.95 × 3,025.65
  4. Step 4: Simplify right side
    5,120.25x = 21,379,076.49
  5. Step 5: Solve for x
    x = 21,379,076.49/5,120.25
  6. Step 6: Final answer
    x = 4,175.40

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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.