Home / 5,118.99-7,678.46-4,423.55

Finding the Fourth Proportional to 5,118.99, 7,678.46 and 4,423.55

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Solution

The fourth proportional to 5,118.99, 7,678.46 and 4,423.55 is: 6,635.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.99 : 7,678.46 = 4,423.55 : x
  2. Step 2: Convert to fraction form
    5,118.99/7,678.46 = 4,423.55/x
  3. Step 3: Cross multiply
    5,118.99x = 7,678.46 × 4,423.55
  4. Step 4: Simplify right side
    5,118.99x = 33,965,991.22
  5. Step 5: Solve for x
    x = 33,965,991.22/5,118.99
  6. Step 6: Final answer
    x = 6,635.29

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Half scale
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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.