Home / 3,989.19-5,482.59-3,103.47

Finding the Fourth Proportional to 3,989.19, 5,482.59 and 3,103.47

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Solution

The fourth proportional to 3,989.19, 5,482.59 and 3,103.47 is: 4,265.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.19 : 5,482.59 = 3,103.47 : x
  2. Step 2: Convert to fraction form
    3,989.19/5,482.59 = 3,103.47/x
  3. Step 3: Cross multiply
    3,989.19x = 5,482.59 × 3,103.47
  4. Step 4: Simplify right side
    3,989.19x = 17,015,053.59
  5. Step 5: Solve for x
    x = 17,015,053.59/3,989.19
  6. Step 6: Final answer
    x = 4,265.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.