Home / 6,423.46-8,857.36-4,181.20

Finding the Fourth Proportional to 6,423.46, 8,857.36 and 4,181.20

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Solution

The fourth proportional to 6,423.46, 8,857.36 and 4,181.20 is: 5,765.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,423.46 : 8,857.36 = 4,181.20 : x
  2. Step 2: Convert to fraction form
    6,423.46/8,857.36 = 4,181.20/x
  3. Step 3: Cross multiply
    6,423.46x = 8,857.36 × 4,181.20
  4. Step 4: Simplify right side
    6,423.46x = 37,034,393.63
  5. Step 5: Solve for x
    x = 37,034,393.63/6,423.46
  6. Step 6: Final answer
    x = 5,765.49

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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.