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Finding the Fourth Proportional to 7,920.66, 11,880.95 and 2,373.81

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Solution

The fourth proportional to 7,920.66, 11,880.95 and 2,373.81 is: 3,560.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.66 : 11,880.95 = 2,373.81 : x
  2. Step 2: Convert to fraction form
    7,920.66/11,880.95 = 2,373.81/x
  3. Step 3: Cross multiply
    7,920.66x = 11,880.95 × 2,373.81
  4. Step 4: Simplify right side
    7,920.66x = 28,203,081.53
  5. Step 5: Solve for x
    x = 28,203,081.53/7,920.66
  6. Step 6: Final answer
    x = 3,560.70

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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.