Home / 5,135.47-7,086.95-2,897.82

Finding the Fourth Proportional to 5,135.47, 7,086.95 and 2,897.82

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Solution

The fourth proportional to 5,135.47, 7,086.95 and 2,897.82 is: 3,998.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.47 : 7,086.95 = 2,897.82 : x
  2. Step 2: Convert to fraction form
    5,135.47/7,086.95 = 2,897.82/x
  3. Step 3: Cross multiply
    5,135.47x = 7,086.95 × 2,897.82
  4. Step 4: Simplify right side
    5,135.47x = 20,536,705.45
  5. Step 5: Solve for x
    x = 20,536,705.45/5,135.47
  6. Step 6: Final answer
    x = 3,998.99

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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.