Home / 7,983.19-11,972.22-2,645.38

Finding the Fourth Proportional to 7,983.19, 11,972.22 and 2,645.38

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Solution

The fourth proportional to 7,983.19, 11,972.22 and 2,645.38 is: 3,967.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.19 : 11,972.22 = 2,645.38 : x
  2. Step 2: Convert to fraction form
    7,983.19/11,972.22 = 2,645.38/x
  3. Step 3: Cross multiply
    7,983.19x = 11,972.22 × 2,645.38
  4. Step 4: Simplify right side
    7,983.19x = 31,671,071.34
  5. Step 5: Solve for x
    x = 31,671,071.34/7,983.19
  6. Step 6: Final answer
    x = 3,967.22

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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.