Home / 3,681.48-5,080.47-2,109.57

Finding the Fourth Proportional to 3,681.48, 5,080.47 and 2,109.57

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Solution

The fourth proportional to 3,681.48, 5,080.47 and 2,109.57 is: 2,911.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.48 : 5,080.47 = 2,109.57 : x
  2. Step 2: Convert to fraction form
    3,681.48/5,080.47 = 2,109.57/x
  3. Step 3: Cross multiply
    3,681.48x = 5,080.47 × 2,109.57
  4. Step 4: Simplify right side
    3,681.48x = 10,717,607.10
  5. Step 5: Solve for x
    x = 10,717,607.10/3,681.48
  6. Step 6: Final answer
    x = 2,911.22

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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.