Home / 7,756.78-11,635.20-3,143.02

Finding the Fourth Proportional to 7,756.78, 11,635.20 and 3,143.02

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Solution

The fourth proportional to 7,756.78, 11,635.20 and 3,143.02 is: 4,714.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,756.78 : 11,635.20 = 3,143.02 : x
  2. Step 2: Convert to fraction form
    7,756.78/11,635.20 = 3,143.02/x
  3. Step 3: Cross multiply
    7,756.78x = 11,635.20 × 3,143.02
  4. Step 4: Simplify right side
    7,756.78x = 36,569,666.30
  5. Step 5: Solve for x
    x = 36,569,666.30/7,756.78
  6. Step 6: Final answer
    x = 4,714.54

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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.