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Finding the Fourth Proportional to 5,135.94, 7,087.91 and 2,897.91

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Solution

The fourth proportional to 5,135.94, 7,087.91 and 2,897.91 is: 3,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.94 : 7,087.91 = 2,897.91 : x
  2. Step 2: Convert to fraction form
    5,135.94/7,087.91 = 2,897.91/x
  3. Step 3: Cross multiply
    5,135.94x = 7,087.91 × 2,897.91
  4. Step 4: Simplify right side
    5,135.94x = 20,540,110.78
  5. Step 5: Solve for x
    x = 20,540,110.78/5,135.94
  6. Step 6: Final answer
    x = 3,999.29

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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.