Home / 3,097.21-4,643.74-1,221.39

Finding the Fourth Proportional to 3,097.21, 4,643.74 and 1,221.39

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Solution

The fourth proportional to 3,097.21, 4,643.74 and 1,221.39 is: 1,831.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,097.21 : 4,643.74 = 1,221.39 : x
  2. Step 2: Convert to fraction form
    3,097.21/4,643.74 = 1,221.39/x
  3. Step 3: Cross multiply
    3,097.21x = 4,643.74 × 1,221.39
  4. Step 4: Simplify right side
    3,097.21x = 5,671,788.27
  5. Step 5: Solve for x
    x = 5,671,788.27/3,097.21
  6. Step 6: Final answer
    x = 1,831.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.