Home / 5,135.53-7,086.88-2,897.37

Finding the Fourth Proportional to 5,135.53, 7,086.88 and 2,897.37

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Solution

The fourth proportional to 5,135.53, 7,086.88 and 2,897.37 is: 3,998.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.53 : 7,086.88 = 2,897.37 : x
  2. Step 2: Convert to fraction form
    5,135.53/7,086.88 = 2,897.37/x
  3. Step 3: Cross multiply
    5,135.53x = 7,086.88 × 2,897.37
  4. Step 4: Simplify right side
    5,135.53x = 20,533,313.51
  5. Step 5: Solve for x
    x = 20,533,313.51/5,135.53
  6. Step 6: Final answer
    x = 3,998.29

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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.