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Finding the Fourth Proportional to 6,240, 8,612.16 and 3,757.44

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Solution

The fourth proportional to 6,240, 8,612.16 and 3,757.44 is: 5,185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240 : 8,612.16 = 3,757.44 : x
  2. Step 2: Convert to fraction form
    6,240/8,612.16 = 3,757.44/x
  3. Step 3: Cross multiply
    6,240x = 8,612.16 × 3,757.44
  4. Step 4: Simplify right side
    6,240x = 32,359,674.47
  5. Step 5: Solve for x
    x = 32,359,674.47/6,240
  6. Step 6: Final answer
    x = 5,185.85

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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.