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Finding the Fourth Proportional to 7,920.16, 11,881.14 and 2,373.82

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Solution

The fourth proportional to 7,920.16, 11,881.14 and 2,373.82 is: 3,561.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.16 : 11,881.14 = 2,373.82 : x
  2. Step 2: Convert to fraction form
    7,920.16/11,881.14 = 2,373.82/x
  3. Step 3: Cross multiply
    7,920.16x = 11,881.14 × 2,373.82
  4. Step 4: Simplify right side
    7,920.16x = 28,203,687.75
  5. Step 5: Solve for x
    x = 28,203,687.75/7,920.16
  6. Step 6: Final answer
    x = 3,561.00

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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.