Home / 4,428.20-6,642.30-4,172.20

Finding the Fourth Proportional to 4,428.20, 6,642.30 and 4,172.20

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Solution

The fourth proportional to 4,428.20, 6,642.30 and 4,172.20 is: 6,258.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,428.20 : 6,642.30 = 4,172.20 : x
  2. Step 2: Convert to fraction form
    4,428.20/6,642.30 = 4,172.20/x
  3. Step 3: Cross multiply
    4,428.20x = 6,642.30 × 4,172.20
  4. Step 4: Simplify right side
    4,428.20x = 27,713,004.06
  5. Step 5: Solve for x
    x = 27,713,004.06/4,428.20
  6. Step 6: Final answer
    x = 6,258.30

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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.