Home / 7,280.44-10,915.10-3,328.96

Finding the Fourth Proportional to 7,280.44, 10,915.10 and 3,328.96

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Solution

The fourth proportional to 7,280.44, 10,915.10 and 3,328.96 is: 4,990.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.44 : 10,915.10 = 3,328.96 : x
  2. Step 2: Convert to fraction form
    7,280.44/10,915.10 = 3,328.96/x
  3. Step 3: Cross multiply
    7,280.44x = 10,915.10 × 3,328.96
  4. Step 4: Simplify right side
    7,280.44x = 36,335,876.72
  5. Step 5: Solve for x
    x = 36,335,876.72/7,280.44
  6. Step 6: Final answer
    x = 4,990.89

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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.