Home / 5,280.30-7,288.11-3,185.10

Finding the Fourth Proportional to 5,280.30, 7,288.11 and 3,185.10

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Solution

The fourth proportional to 5,280.30, 7,288.11 and 3,185.10 is: 4,396.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.30 : 7,288.11 = 3,185.10 : x
  2. Step 2: Convert to fraction form
    5,280.30/7,288.11 = 3,185.10/x
  3. Step 3: Cross multiply
    5,280.30x = 7,288.11 × 3,185.10
  4. Step 4: Simplify right side
    5,280.30x = 23,213,359.16
  5. Step 5: Solve for x
    x = 23,213,359.16/5,280.30
  6. Step 6: Final answer
    x = 4,396.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.