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Finding the Fourth Proportional to 7,920.66, 11,881.02 and 2,374.04

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Solution

The fourth proportional to 7,920.66, 11,881.02 and 2,374.04 is: 3,561.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.66 : 11,881.02 = 2,374.04 : x
  2. Step 2: Convert to fraction form
    7,920.66/11,881.02 = 2,374.04/x
  3. Step 3: Cross multiply
    7,920.66x = 11,881.02 × 2,374.04
  4. Step 4: Simplify right side
    7,920.66x = 28,205,957.32
  5. Step 5: Solve for x
    x = 28,205,957.32/7,920.66
  6. Step 6: Final answer
    x = 3,561.06

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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.