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Finding the Fourth Proportional to 4,929.22, 7,392.70 and 1,419.22

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Solution

The fourth proportional to 4,929.22, 7,392.70 and 1,419.22 is: 2,128.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,929.22 : 7,392.70 = 1,419.22 : x
  2. Step 2: Convert to fraction form
    4,929.22/7,392.70 = 1,419.22/x
  3. Step 3: Cross multiply
    4,929.22x = 7,392.70 × 1,419.22
  4. Step 4: Simplify right side
    4,929.22x = 10,491,867.69
  5. Step 5: Solve for x
    x = 10,491,867.69/4,929.22
  6. Step 6: Final answer
    x = 2,128.50

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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.