Home / 5,760.30-8,640.45-2,640.30

Finding the Fourth Proportional to 5,760.30, 8,640.45 and 2,640.30

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Solution

The fourth proportional to 5,760.30, 8,640.45 and 2,640.30 is: 3,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,760.30 : 8,640.45 = 2,640.30 : x
  2. Step 2: Convert to fraction form
    5,760.30/8,640.45 = 2,640.30/x
  3. Step 3: Cross multiply
    5,760.30x = 8,640.45 × 2,640.30
  4. Step 4: Simplify right side
    5,760.30x = 22,813,380.14
  5. Step 5: Solve for x
    x = 22,813,380.14/5,760.30
  6. Step 6: Final answer
    x = 3,960.45

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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.