Home / 2,686.85-3,708-1,507.83

Finding the Fourth Proportional to 2,686.85, 3,708 and 1,507.83

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Solution

The fourth proportional to 2,686.85, 3,708 and 1,507.83 is: 2,080.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.85 : 3,708 = 1,507.83 : x
  2. Step 2: Convert to fraction form
    2,686.85/3,708 = 1,507.83/x
  3. Step 3: Cross multiply
    2,686.85x = 3,708 × 1,507.83
  4. Step 4: Simplify right side
    2,686.85x = 5,591,033.64
  5. Step 5: Solve for x
    x = 5,591,033.64/2,686.85
  6. Step 6: Final answer
    x = 2,080.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.