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Finding the Fourth Proportional to 7,880.68, 11,813.46 and 3,497.68

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Solution

The fourth proportional to 7,880.68, 11,813.46 and 3,497.68 is: 5,243.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.68 : 11,813.46 = 3,497.68 : x
  2. Step 2: Convert to fraction form
    7,880.68/11,813.46 = 3,497.68/x
  3. Step 3: Cross multiply
    7,880.68x = 11,813.46 × 3,497.68
  4. Step 4: Simplify right side
    7,880.68x = 41,319,702.77
  5. Step 5: Solve for x
    x = 41,319,702.77/7,880.68
  6. Step 6: Final answer
    x = 5,243.16

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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.