Home / 5,078.73-7,008.62-2,840.60

Finding the Fourth Proportional to 5,078.73, 7,008.62 and 2,840.60

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Solution

The fourth proportional to 5,078.73, 7,008.62 and 2,840.60 is: 3,920.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.73 : 7,008.62 = 2,840.60 : x
  2. Step 2: Convert to fraction form
    5,078.73/7,008.62 = 2,840.60/x
  3. Step 3: Cross multiply
    5,078.73x = 7,008.62 × 2,840.60
  4. Step 4: Simplify right side
    5,078.73x = 19,908,636.73
  5. Step 5: Solve for x
    x = 19,908,636.73/5,078.73
  6. Step 6: Final answer
    x = 3,920.00

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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.