Home / 5,452.86-8,179.28-1,989.30

Finding the Fourth Proportional to 5,452.86, 8,179.28 and 1,989.30

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Solution

The fourth proportional to 5,452.86, 8,179.28 and 1,989.30 is: 2,983.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,452.86 : 8,179.28 = 1,989.30 : x
  2. Step 2: Convert to fraction form
    5,452.86/8,179.28 = 1,989.30/x
  3. Step 3: Cross multiply
    5,452.86x = 8,179.28 × 1,989.30
  4. Step 4: Simplify right side
    5,452.86x = 16,271,041.70
  5. Step 5: Solve for x
    x = 16,271,041.70/5,452.86
  6. Step 6: Final answer
    x = 2,983.95

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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.