Home / 6,424.20-8,864.10-4,431.60

Finding the Fourth Proportional to 6,424.20, 8,864.10 and 4,431.60

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Solution

The fourth proportional to 6,424.20, 8,864.10 and 4,431.60 is: 6,114.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,424.20 : 8,864.10 = 4,431.60 : x
  2. Step 2: Convert to fraction form
    6,424.20/8,864.10 = 4,431.60/x
  3. Step 3: Cross multiply
    6,424.20x = 8,864.10 × 4,431.60
  4. Step 4: Simplify right side
    6,424.20x = 39,282,145.56
  5. Step 5: Solve for x
    x = 39,282,145.56/6,424.20
  6. Step 6: Final answer
    x = 6,114.71

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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.