Home / 5,478.23-8,209.55-4,239.84

Finding the Fourth Proportional to 5,478.23, 8,209.55 and 4,239.84

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Solution

The fourth proportional to 5,478.23, 8,209.55 and 4,239.84 is: 6,353.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.23 : 8,209.55 = 4,239.84 : x
  2. Step 2: Convert to fraction form
    5,478.23/8,209.55 = 4,239.84/x
  3. Step 3: Cross multiply
    5,478.23x = 8,209.55 × 4,239.84
  4. Step 4: Simplify right side
    5,478.23x = 34,807,219.86
  5. Step 5: Solve for x
    x = 34,807,219.86/5,478.23
  6. Step 6: Final answer
    x = 6,353.73

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Half 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.