Home / 6,178.86-8,528.16-3,940.24

Finding the Fourth Proportional to 6,178.86, 8,528.16 and 3,940.24

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Solution

The fourth proportional to 6,178.86, 8,528.16 and 3,940.24 is: 5,438.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,178.86 : 8,528.16 = 3,940.24 : x
  2. Step 2: Convert to fraction form
    6,178.86/8,528.16 = 3,940.24/x
  3. Step 3: Cross multiply
    6,178.86x = 8,528.16 × 3,940.24
  4. Step 4: Simplify right side
    6,178.86x = 33,602,997.16
  5. Step 5: Solve for x
    x = 33,602,997.16/6,178.86
  6. Step 6: Final answer
    x = 5,438.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.