Home / 5,078.62-7,008.51-2,840.53

Finding the Fourth Proportional to 5,078.62, 7,008.51 and 2,840.53

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Solution

The fourth proportional to 5,078.62, 7,008.51 and 2,840.53 is: 3,919.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.62 : 7,008.51 = 2,840.53 : x
  2. Step 2: Convert to fraction form
    5,078.62/7,008.51 = 2,840.53/x
  3. Step 3: Cross multiply
    5,078.62x = 7,008.51 × 2,840.53
  4. Step 4: Simplify right side
    5,078.62x = 19,907,891.67
  5. Step 5: Solve for x
    x = 19,907,891.67/5,078.62
  6. Step 6: Final answer
    x = 3,919.94

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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.