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Finding the Fourth Proportional to 8,488.88, 11,712.60 and 5,702.48

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Solution

The fourth proportional to 8,488.88, 11,712.60 and 5,702.48 is: 7,868.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.88 : 11,712.60 = 5,702.48 : x
  2. Step 2: Convert to fraction form
    8,488.88/11,712.60 = 5,702.48/x
  3. Step 3: Cross multiply
    8,488.88x = 11,712.60 × 5,702.48
  4. Step 4: Simplify right side
    8,488.88x = 66,790,867.25
  5. Step 5: Solve for x
    x = 66,790,867.25/8,488.88
  6. Step 6: Final answer
    x = 7,868.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.