Home / 2,780.75-3,837.89-1,601.62

Finding the Fourth Proportional to 2,780.75, 3,837.89 and 1,601.62

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Solution

The fourth proportional to 2,780.75, 3,837.89 and 1,601.62 is: 2,210.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.75 : 3,837.89 = 1,601.62 : x
  2. Step 2: Convert to fraction form
    2,780.75/3,837.89 = 1,601.62/x
  3. Step 3: Cross multiply
    2,780.75x = 3,837.89 × 1,601.62
  4. Step 4: Simplify right side
    2,780.75x = 6,146,841.38
  5. Step 5: Solve for x
    x = 6,146,841.38/2,780.75
  6. Step 6: Final answer
    x = 2,210.50

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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.