Home / 8,421.24-12,631.89-3,798.84

Finding the Fourth Proportional to 8,421.24, 12,631.89 and 3,798.84

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Solution

The fourth proportional to 8,421.24, 12,631.89 and 3,798.84 is: 5,698.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.24 : 12,631.89 = 3,798.84 : x
  2. Step 2: Convert to fraction form
    8,421.24/12,631.89 = 3,798.84/x
  3. Step 3: Cross multiply
    8,421.24x = 12,631.89 × 3,798.84
  4. Step 4: Simplify right side
    8,421.24x = 47,986,529.01
  5. Step 5: Solve for x
    x = 47,986,529.01/8,421.24
  6. Step 6: Final answer
    x = 5,698.27

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.