Home / 3,139.62-4,708.14-1,290.66

Finding the Fourth Proportional to 3,139.62, 4,708.14 and 1,290.66

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Solution

The fourth proportional to 3,139.62, 4,708.14 and 1,290.66 is: 1,935.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.62 : 4,708.14 = 1,290.66 : x
  2. Step 2: Convert to fraction form
    3,139.62/4,708.14 = 1,290.66/x
  3. Step 3: Cross multiply
    3,139.62x = 4,708.14 × 1,290.66
  4. Step 4: Simplify right side
    3,139.62x = 6,076,607.97
  5. Step 5: Solve for x
    x = 6,076,607.97/3,139.62
  6. Step 6: Final answer
    x = 1,935.46

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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.