Home / 5,110.56-7,666.65-1,990.71

Finding the Fourth Proportional to 5,110.56, 7,666.65 and 1,990.71

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Solution

The fourth proportional to 5,110.56, 7,666.65 and 1,990.71 is: 2,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.56 : 7,666.65 = 1,990.71 : x
  2. Step 2: Convert to fraction form
    5,110.56/7,666.65 = 1,990.71/x
  3. Step 3: Cross multiply
    5,110.56x = 7,666.65 × 1,990.71
  4. Step 4: Simplify right side
    5,110.56x = 15,262,076.82
  5. Step 5: Solve for x
    x = 15,262,076.82/5,110.56
  6. Step 6: Final answer
    x = 2,986.38

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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.