Home / 5,135.76-7,087.32-2,897.52

Finding the Fourth Proportional to 5,135.76, 7,087.32 and 2,897.52

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Solution

The fourth proportional to 5,135.76, 7,087.32 and 2,897.52 is: 3,998.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.76 : 7,087.32 = 2,897.52 : x
  2. Step 2: Convert to fraction form
    5,135.76/7,087.32 = 2,897.52/x
  3. Step 3: Cross multiply
    5,135.76x = 7,087.32 × 2,897.52
  4. Step 4: Simplify right side
    5,135.76x = 20,535,651.45
  5. Step 5: Solve for x
    x = 20,535,651.45/5,135.76
  6. Step 6: Final answer
    x = 3,998.56

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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.