Home / 7,077.56-10,612.68-3,178.64

Finding the Fourth Proportional to 7,077.56, 10,612.68 and 3,178.64

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Solution

The fourth proportional to 7,077.56, 10,612.68 and 3,178.64 is: 4,766.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,077.56 : 10,612.68 = 3,178.64 : x
  2. Step 2: Convert to fraction form
    7,077.56/10,612.68 = 3,178.64/x
  3. Step 3: Cross multiply
    7,077.56x = 10,612.68 × 3,178.64
  4. Step 4: Simplify right side
    7,077.56x = 33,733,889.16
  5. Step 5: Solve for x
    x = 33,733,889.16/7,077.56
  6. Step 6: Final answer
    x = 4,766.32

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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.