Home / 5,890.20-8,119.74-4,315.80

Finding the Fourth Proportional to 5,890.20, 8,119.74 and 4,315.80

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Solution

The fourth proportional to 5,890.20, 8,119.74 and 4,315.80 is: 5,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,890.20 : 8,119.74 = 4,315.80 : x
  2. Step 2: Convert to fraction form
    5,890.20/8,119.74 = 4,315.80/x
  3. Step 3: Cross multiply
    5,890.20x = 8,119.74 × 4,315.80
  4. Step 4: Simplify right side
    5,890.20x = 35,043,173.89
  5. Step 5: Solve for x
    x = 35,043,173.89/5,890.20
  6. Step 6: Final answer
    x = 5,949.40

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.