Home / 8,720.04-13,072.36-3,172.42

Finding the Fourth Proportional to 8,720.04, 13,072.36 and 3,172.42

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Solution

The fourth proportional to 8,720.04, 13,072.36 and 3,172.42 is: 4,755.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.04 : 13,072.36 = 3,172.42 : x
  2. Step 2: Convert to fraction form
    8,720.04/13,072.36 = 3,172.42/x
  3. Step 3: Cross multiply
    8,720.04x = 13,072.36 × 3,172.42
  4. Step 4: Simplify right side
    8,720.04x = 41,470,966.06
  5. Step 5: Solve for x
    x = 41,470,966.06/8,720.04
  6. Step 6: Final answer
    x = 4,755.82

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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.