Home / 4,757.88-7,139.37-1,986.45

Finding the Fourth Proportional to 4,757.88, 7,139.37 and 1,986.45

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Solution

The fourth proportional to 4,757.88, 7,139.37 and 1,986.45 is: 2,980.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,757.88 : 7,139.37 = 1,986.45 : x
  2. Step 2: Convert to fraction form
    4,757.88/7,139.37 = 1,986.45/x
  3. Step 3: Cross multiply
    4,757.88x = 7,139.37 × 1,986.45
  4. Step 4: Simplify right side
    4,757.88x = 14,181,965.84
  5. Step 5: Solve for x
    x = 14,181,965.84/4,757.88
  6. Step 6: Final answer
    x = 2,980.74

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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.