Home / 4,221.84-5,829.72-3,172.08

Finding the Fourth Proportional to 4,221.84, 5,829.72 and 3,172.08

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Solution

The fourth proportional to 4,221.84, 5,829.72 and 3,172.08 is: 4,380.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.84 : 5,829.72 = 3,172.08 : x
  2. Step 2: Convert to fraction form
    4,221.84/5,829.72 = 3,172.08/x
  3. Step 3: Cross multiply
    4,221.84x = 5,829.72 × 3,172.08
  4. Step 4: Simplify right side
    4,221.84x = 18,492,338.22
  5. Step 5: Solve for x
    x = 18,492,338.22/4,221.84
  6. Step 6: Final answer
    x = 4,380.16

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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.