Home / 4,390.50-6,579.38-2,196.21

Finding the Fourth Proportional to 4,390.50, 6,579.38 and 2,196.21

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Solution

The fourth proportional to 4,390.50, 6,579.38 and 2,196.21 is: 3,291.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,390.50 : 6,579.38 = 2,196.21 : x
  2. Step 2: Convert to fraction form
    4,390.50/6,579.38 = 2,196.21/x
  3. Step 3: Cross multiply
    4,390.50x = 6,579.38 × 2,196.21
  4. Step 4: Simplify right side
    4,390.50x = 14,449,717.96
  5. Step 5: Solve for x
    x = 14,449,717.96/4,390.50
  6. Step 6: Final answer
    x = 3,291.13

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Double scale
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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.