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Finding the Fourth Proportional to 6,656.78, 9,987.52 and 2,958.67

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Solution

The fourth proportional to 6,656.78, 9,987.52 and 2,958.67 is: 4,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,656.78 : 9,987.52 = 2,958.67 : x
  2. Step 2: Convert to fraction form
    6,656.78/9,987.52 = 2,958.67/x
  3. Step 3: Cross multiply
    6,656.78x = 9,987.52 × 2,958.67
  4. Step 4: Simplify right side
    6,656.78x = 29,549,775.80
  5. Step 5: Solve for x
    x = 29,549,775.80/6,656.78
  6. Step 6: Final answer
    x = 4,439.05

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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.