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Finding the Fourth Proportional to 4,780.88, 7,171.58 and 1,702.88

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Solution

The fourth proportional to 4,780.88, 7,171.58 and 1,702.88 is: 2,554.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.88 : 7,171.58 = 1,702.88 : x
  2. Step 2: Convert to fraction form
    4,780.88/7,171.58 = 1,702.88/x
  3. Step 3: Cross multiply
    4,780.88x = 7,171.58 × 1,702.88
  4. Step 4: Simplify right side
    4,780.88x = 12,212,308.55
  5. Step 5: Solve for x
    x = 12,212,308.55/4,780.88
  6. Step 6: Final answer
    x = 2,554.41

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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.