Home / 8,415.62-11,613.08-5,057.81

Finding the Fourth Proportional to 8,415.62, 11,613.08 and 5,057.81

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Solution

The fourth proportional to 8,415.62, 11,613.08 and 5,057.81 is: 6,979.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.62 : 11,613.08 = 5,057.81 : x
  2. Step 2: Convert to fraction form
    8,415.62/11,613.08 = 5,057.81/x
  3. Step 3: Cross multiply
    8,415.62x = 11,613.08 × 5,057.81
  4. Step 4: Simplify right side
    8,415.62x = 58,736,668.80
  5. Step 5: Solve for x
    x = 58,736,668.80/8,415.62
  6. Step 6: Final answer
    x = 6,979.49

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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.