Home / 5,521.20-8,281.80-4,225.20

Finding the Fourth Proportional to 5,521.20, 8,281.80 and 4,225.20

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Solution

The fourth proportional to 5,521.20, 8,281.80 and 4,225.20 is: 6,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.20 : 8,281.80 = 4,225.20 : x
  2. Step 2: Convert to fraction form
    5,521.20/8,281.80 = 4,225.20/x
  3. Step 3: Cross multiply
    5,521.20x = 8,281.80 × 4,225.20
  4. Step 4: Simplify right side
    5,521.20x = 34,992,261.36
  5. Step 5: Solve for x
    x = 34,992,261.36/5,521.20
  6. Step 6: Final answer
    x = 6,337.80

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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.