Home / 2,789.21-3,848.99-1,670.76

Finding the Fourth Proportional to 2,789.21, 3,848.99 and 1,670.76

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Solution

The fourth proportional to 2,789.21, 3,848.99 and 1,670.76 is: 2,305.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.21 : 3,848.99 = 1,670.76 : x
  2. Step 2: Convert to fraction form
    2,789.21/3,848.99 = 1,670.76/x
  3. Step 3: Cross multiply
    2,789.21x = 3,848.99 × 1,670.76
  4. Step 4: Simplify right side
    2,789.21x = 6,430,730.18
  5. Step 5: Solve for x
    x = 6,430,730.18/2,789.21
  6. Step 6: Final answer
    x = 2,305.58

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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.