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Finding the Fourth Proportional to 4,750.60, 7,126.80 and 1,788.88

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Solution

The fourth proportional to 4,750.60, 7,126.80 and 1,788.88 is: 2,683.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,750.60 : 7,126.80 = 1,788.88 : x
  2. Step 2: Convert to fraction form
    4,750.60/7,126.80 = 1,788.88/x
  3. Step 3: Cross multiply
    4,750.60x = 7,126.80 × 1,788.88
  4. Step 4: Simplify right side
    4,750.60x = 12,748,989.98
  5. Step 5: Solve for x
    x = 12,748,989.98/4,750.60
  6. Step 6: Final answer
    x = 2,683.66

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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.