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Finding the Fourth Proportional to 5,078.94, 7,005.84 and 3,090.86

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Solution

The fourth proportional to 5,078.94, 7,005.84 and 3,090.86 is: 4,263.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.94 : 7,005.84 = 3,090.86 : x
  2. Step 2: Convert to fraction form
    5,078.94/7,005.84 = 3,090.86/x
  3. Step 3: Cross multiply
    5,078.94x = 7,005.84 × 3,090.86
  4. Step 4: Simplify right side
    5,078.94x = 21,654,070.62
  5. Step 5: Solve for x
    x = 21,654,070.62/5,078.94
  6. Step 6: Final answer
    x = 4,263.50

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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.