Home / 5,106.45-7,660.15-1,986.69

Finding the Fourth Proportional to 5,106.45, 7,660.15 and 1,986.69

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Solution

The fourth proportional to 5,106.45, 7,660.15 and 1,986.69 is: 2,980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.45 : 7,660.15 = 1,986.69 : x
  2. Step 2: Convert to fraction form
    5,106.45/7,660.15 = 1,986.69/x
  3. Step 3: Cross multiply
    5,106.45x = 7,660.15 × 1,986.69
  4. Step 4: Simplify right side
    5,106.45x = 15,218,343.40
  5. Step 5: Solve for x
    x = 15,218,343.40/5,106.45
  6. Step 6: Final answer
    x = 2,980.22

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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.