Home / 2,780.80-3,837.91-1,601.64

Finding the Fourth Proportional to 2,780.80, 3,837.91 and 1,601.64

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Solution

The fourth proportional to 2,780.80, 3,837.91 and 1,601.64 is: 2,210.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.80 : 3,837.91 = 1,601.64 : x
  2. Step 2: Convert to fraction form
    2,780.80/3,837.91 = 1,601.64/x
  3. Step 3: Cross multiply
    2,780.80x = 3,837.91 × 1,601.64
  4. Step 4: Simplify right side
    2,780.80x = 6,146,950.17
  5. Step 5: Solve for x
    x = 6,146,950.17/2,780.80
  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.