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Finding the Fourth Proportional to 4,756.88, 7,135.34 and 1,678.88

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Solution

The fourth proportional to 4,756.88, 7,135.34 and 1,678.88 is: 2,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,756.88 : 7,135.34 = 1,678.88 : x
  2. Step 2: Convert to fraction form
    4,756.88/7,135.34 = 1,678.88/x
  3. Step 3: Cross multiply
    4,756.88x = 7,135.34 × 1,678.88
  4. Step 4: Simplify right side
    4,756.88x = 11,979,335.55
  5. Step 5: Solve for x
    x = 11,979,335.55/4,756.88
  6. Step 6: Final answer
    x = 2,518.32

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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.