Home / 8,391.20-11,579.40-4,613.64

Finding the Fourth Proportional to 8,391.20, 11,579.40 and 4,613.64

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Solution

The fourth proportional to 8,391.20, 11,579.40 and 4,613.64 is: 6,366.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.20 : 11,579.40 = 4,613.64 : x
  2. Step 2: Convert to fraction form
    8,391.20/11,579.40 = 4,613.64/x
  3. Step 3: Cross multiply
    8,391.20x = 11,579.40 × 4,613.64
  4. Step 4: Simplify right side
    8,391.20x = 53,423,183.02
  5. Step 5: Solve for x
    x = 53,423,183.02/8,391.20
  6. Step 6: Final answer
    x = 6,366.57

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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.