Home / 7,280.30-10,911.31-3,115.41

Finding the Fourth Proportional to 7,280.30, 10,911.31 and 3,115.41

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Solution

The fourth proportional to 7,280.30, 10,911.31 and 3,115.41 is: 4,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.30 : 10,911.31 = 3,115.41 : x
  2. Step 2: Convert to fraction form
    7,280.30/10,911.31 = 3,115.41/x
  3. Step 3: Cross multiply
    7,280.30x = 10,911.31 × 3,115.41
  4. Step 4: Simplify right side
    7,280.30x = 33,993,204.29
  5. Step 5: Solve for x
    x = 33,993,204.29/7,280.30
  6. Step 6: Final answer
    x = 4,669.20

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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.