Home / 5,106.51-7,660.07-1,985.48

Finding the Fourth Proportional to 5,106.51, 7,660.07 and 1,985.48

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Solution

The fourth proportional to 5,106.51, 7,660.07 and 1,985.48 is: 2,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.51 : 7,660.07 = 1,985.48 : x
  2. Step 2: Convert to fraction form
    5,106.51/7,660.07 = 1,985.48/x
  3. Step 3: Cross multiply
    5,106.51x = 7,660.07 × 1,985.48
  4. Step 4: Simplify right side
    5,106.51x = 15,208,867.56
  5. Step 5: Solve for x
    x = 15,208,867.56/5,106.51
  6. Step 6: Final answer
    x = 2,978.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.