Home / 2,780.81-3,837.44-1,718.15

Finding the Fourth Proportional to 2,780.81, 3,837.44 and 1,718.15

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Solution

The fourth proportional to 2,780.81, 3,837.44 and 1,718.15 is: 2,370.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.81 : 3,837.44 = 1,718.15 : x
  2. Step 2: Convert to fraction form
    2,780.81/3,837.44 = 1,718.15/x
  3. Step 3: Cross multiply
    2,780.81x = 3,837.44 × 1,718.15
  4. Step 4: Simplify right side
    2,780.81x = 6,593,269.76
  5. Step 5: Solve for x
    x = 6,593,269.76/2,780.81
  6. Step 6: Final answer
    x = 2,370.99

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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.