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Finding the Fourth Proportional to 5,640.12, 8,460.18 and 3,330

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Solution

The fourth proportional to 5,640.12, 8,460.18 and 3,330 is: 4,995.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.12 : 8,460.18 = 3,330 : x
  2. Step 2: Convert to fraction form
    5,640.12/8,460.18 = 3,330/x
  3. Step 3: Cross multiply
    5,640.12x = 8,460.18 × 3,330
  4. Step 4: Simplify right side
    5,640.12x = 28,172,399.40
  5. Step 5: Solve for x
    x = 28,172,399.40/5,640.12
  6. Step 6: Final answer
    x = 4,995.00

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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.