Home / 3,681.77-5,080.28-2,109.56

Finding the Fourth Proportional to 3,681.77, 5,080.28 and 2,109.56

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Solution

The fourth proportional to 3,681.77, 5,080.28 and 2,109.56 is: 2,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.77 : 5,080.28 = 2,109.56 : x
  2. Step 2: Convert to fraction form
    3,681.77/5,080.28 = 2,109.56/x
  3. Step 3: Cross multiply
    3,681.77x = 5,080.28 × 2,109.56
  4. Step 4: Simplify right side
    3,681.77x = 10,717,157.63
  5. Step 5: Solve for x
    x = 10,717,157.63/3,681.77
  6. Step 6: Final answer
    x = 2,910.87

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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.