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Finding the Fourth Proportional to 4,709.45, 7,064.45 and 1,422.88

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Solution

The fourth proportional to 4,709.45, 7,064.45 and 1,422.88 is: 2,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,709.45 : 7,064.45 = 1,422.88 : x
  2. Step 2: Convert to fraction form
    4,709.45/7,064.45 = 1,422.88/x
  3. Step 3: Cross multiply
    4,709.45x = 7,064.45 × 1,422.88
  4. Step 4: Simplify right side
    4,709.45x = 10,051,864.62
  5. Step 5: Solve for x
    x = 10,051,864.62/4,709.45
  6. Step 6: Final answer
    x = 2,134.40

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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.