Home / 4,947.39-7,423.20-2,172.69

Finding the Fourth Proportional to 4,947.39, 7,423.20 and 2,172.69

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Solution

The fourth proportional to 4,947.39, 7,423.20 and 2,172.69 is: 3,259.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947.39 : 7,423.20 = 2,172.69 : x
  2. Step 2: Convert to fraction form
    4,947.39/7,423.20 = 2,172.69/x
  3. Step 3: Cross multiply
    4,947.39x = 7,423.20 × 2,172.69
  4. Step 4: Simplify right side
    4,947.39x = 16,128,312.41
  5. Step 5: Solve for x
    x = 16,128,312.41/4,947.39
  6. Step 6: Final answer
    x = 3,259.96

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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.