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Finding the Fourth Proportional to 3,483.78, 5,222.70 and 2,756.70

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Solution

The fourth proportional to 3,483.78, 5,222.70 and 2,756.70 is: 4,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,483.78 : 5,222.70 = 2,756.70 : x
  2. Step 2: Convert to fraction form
    3,483.78/5,222.70 = 2,756.70/x
  3. Step 3: Cross multiply
    3,483.78x = 5,222.70 × 2,756.70
  4. Step 4: Simplify right side
    3,483.78x = 14,397,417.09
  5. Step 5: Solve for x
    x = 14,397,417.09/3,483.78
  6. Step 6: Final answer
    x = 4,132.70

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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.