Home / 2,780.37-3,836.57-1,718.37

Finding the Fourth Proportional to 2,780.37, 3,836.57 and 1,718.37

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Solution

The fourth proportional to 2,780.37, 3,836.57 and 1,718.37 is: 2,371.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.37 : 3,836.57 = 1,718.37 : x
  2. Step 2: Convert to fraction form
    2,780.37/3,836.57 = 1,718.37/x
  3. Step 3: Cross multiply
    2,780.37x = 3,836.57 × 1,718.37
  4. Step 4: Simplify right side
    2,780.37x = 6,592,638.20
  5. Step 5: Solve for x
    x = 6,592,638.20/2,780.37
  6. Step 6: Final answer
    x = 2,371.14

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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.