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Finding the Fourth Proportional to 2,579.99, 3,869.94 and 632.21

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Solution

The fourth proportional to 2,579.99, 3,869.94 and 632.21 is: 948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.99 : 3,869.94 = 632.21 : x
  2. Step 2: Convert to fraction form
    2,579.99/3,869.94 = 632.21/x
  3. Step 3: Cross multiply
    2,579.99x = 3,869.94 × 632.21
  4. Step 4: Simplify right side
    2,579.99x = 2,446,597.79
  5. Step 5: Solve for x
    x = 2,446,597.79/2,579.99
  6. Step 6: Final answer
    x = 948.30

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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.