Home / 3,681.44-5,080.40-2,109.52

Finding the Fourth Proportional to 3,681.44, 5,080.40 and 2,109.52

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Solution

The fourth proportional to 3,681.44, 5,080.40 and 2,109.52 is: 2,911.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.44 : 5,080.40 = 2,109.52 : x
  2. Step 2: Convert to fraction form
    3,681.44/5,080.40 = 2,109.52/x
  3. Step 3: Cross multiply
    3,681.44x = 5,080.40 × 2,109.52
  4. Step 4: Simplify right side
    3,681.44x = 10,717,205.41
  5. Step 5: Solve for x
    x = 10,717,205.41/3,681.44
  6. Step 6: Final answer
    x = 2,911.14

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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.