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Finding the Fourth Proportional to 6,483.80, 8,942.88 and 4,242.08

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Solution

The fourth proportional to 6,483.80, 8,942.88 and 4,242.08 is: 5,850.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,483.80 : 8,942.88 = 4,242.08 : x
  2. Step 2: Convert to fraction form
    6,483.80/8,942.88 = 4,242.08/x
  3. Step 3: Cross multiply
    6,483.80x = 8,942.88 × 4,242.08
  4. Step 4: Simplify right side
    6,483.80x = 37,936,412.39
  5. Step 5: Solve for x
    x = 37,936,412.39/6,483.80
  6. Step 6: Final answer
    x = 5,850.95

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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.