Home / 4,780.47-7,169.49-2,146.50

Finding the Fourth Proportional to 4,780.47, 7,169.49 and 2,146.50

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Solution

The fourth proportional to 4,780.47, 7,169.49 and 2,146.50 is: 3,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.47 : 7,169.49 = 2,146.50 : x
  2. Step 2: Convert to fraction form
    4,780.47/7,169.49 = 2,146.50/x
  3. Step 3: Cross multiply
    4,780.47x = 7,169.49 × 2,146.50
  4. Step 4: Simplify right side
    4,780.47x = 15,389,310.29
  5. Step 5: Solve for x
    x = 15,389,310.29/4,780.47
  6. Step 6: Final answer
    x = 3,219.20

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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.