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Finding the Fourth Proportional to 7,702.88, 11,554.30 and 1,859.49

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Solution

The fourth proportional to 7,702.88, 11,554.30 and 1,859.49 is: 2,789.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,702.88 : 11,554.30 = 1,859.49 : x
  2. Step 2: Convert to fraction form
    7,702.88/11,554.30 = 1,859.49/x
  3. Step 3: Cross multiply
    7,702.88x = 11,554.30 × 1,859.49
  4. Step 4: Simplify right side
    7,702.88x = 21,485,097.17
  5. Step 5: Solve for x
    x = 21,485,097.17/7,702.88
  6. Step 6: Final answer
    x = 2,789.23

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Double scale
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Similar ratio
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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.