Home / 5,135.68-7,087.56-2,897.32

Finding the Fourth Proportional to 5,135.68, 7,087.56 and 2,897.32

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Solution

The fourth proportional to 5,135.68, 7,087.56 and 2,897.32 is: 3,998.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.68 : 7,087.56 = 2,897.32 : x
  2. Step 2: Convert to fraction form
    5,135.68/7,087.56 = 2,897.32/x
  3. Step 3: Cross multiply
    5,135.68x = 7,087.56 × 2,897.32
  4. Step 4: Simplify right side
    5,135.68x = 20,534,929.34
  5. Step 5: Solve for x
    x = 20,534,929.34/5,135.68
  6. Step 6: Final answer
    x = 3,998.48

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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.