Home / 5,078.97-7,008.96-2,840.84

Finding the Fourth Proportional to 5,078.97, 7,008.96 and 2,840.84

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Solution

The fourth proportional to 5,078.97, 7,008.96 and 2,840.84 is: 3,920.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.97 : 7,008.96 = 2,840.84 : x
  2. Step 2: Convert to fraction form
    5,078.97/7,008.96 = 2,840.84/x
  3. Step 3: Cross multiply
    5,078.97x = 7,008.96 × 2,840.84
  4. Step 4: Simplify right side
    5,078.97x = 19,911,333.93
  5. Step 5: Solve for x
    x = 19,911,333.93/5,078.97
  6. Step 6: Final answer
    x = 3,920.35

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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.