Home / 2,789.39-3,848.90-1,670.37

Finding the Fourth Proportional to 2,789.39, 3,848.90 and 1,670.37

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Solution

The fourth proportional to 2,789.39, 3,848.90 and 1,670.37 is: 2,304.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.39 : 3,848.90 = 1,670.37 : x
  2. Step 2: Convert to fraction form
    2,789.39/3,848.90 = 1,670.37/x
  3. Step 3: Cross multiply
    2,789.39x = 3,848.90 × 1,670.37
  4. Step 4: Simplify right side
    2,789.39x = 6,429,078.74
  5. Step 5: Solve for x
    x = 6,429,078.74/2,789.39
  6. Step 6: Final answer
    x = 2,304.84

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1.5x scale

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.