Home / 6,780.64-10,171.94-2,101.06

Finding the Fourth Proportional to 6,780.64, 10,171.94 and 2,101.06

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Solution

The fourth proportional to 6,780.64, 10,171.94 and 2,101.06 is: 3,151.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.64 : 10,171.94 = 2,101.06 : x
  2. Step 2: Convert to fraction form
    6,780.64/10,171.94 = 2,101.06/x
  3. Step 3: Cross multiply
    6,780.64x = 10,171.94 × 2,101.06
  4. Step 4: Simplify right side
    6,780.64x = 21,371,856.26
  5. Step 5: Solve for x
    x = 21,371,856.26/6,780.64
  6. Step 6: Final answer
    x = 3,151.89

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1.5x scale

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.