Home / 8,072.16-12,111.44-3,143.28

Finding the Fourth Proportional to 8,072.16, 12,111.44 and 3,143.28

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Solution

The fourth proportional to 8,072.16, 12,111.44 and 3,143.28 is: 4,716.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.16 : 12,111.44 = 3,143.28 : x
  2. Step 2: Convert to fraction form
    8,072.16/12,111.44 = 3,143.28/x
  3. Step 3: Cross multiply
    8,072.16x = 12,111.44 × 3,143.28
  4. Step 4: Simplify right side
    8,072.16x = 38,069,647.12
  5. Step 5: Solve for x
    x = 38,069,647.12/8,072.16
  6. Step 6: Final answer
    x = 4,716.17

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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.