Home / 2,780.51-3,837.75-1,662.13

Finding the Fourth Proportional to 2,780.51, 3,837.75 and 1,662.13

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Solution

The fourth proportional to 2,780.51, 3,837.75 and 1,662.13 is: 2,294.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.51 : 3,837.75 = 1,662.13 : x
  2. Step 2: Convert to fraction form
    2,780.51/3,837.75 = 1,662.13/x
  3. Step 3: Cross multiply
    2,780.51x = 3,837.75 × 1,662.13
  4. Step 4: Simplify right side
    2,780.51x = 6,378,820.22
  5. Step 5: Solve for x
    x = 6,378,820.22/2,780.51
  6. Step 6: Final answer
    x = 2,294.12

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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.