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Finding the Fourth Proportional to 6,485.94, 8,943.98 and 4,247.90

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Solution

The fourth proportional to 6,485.94, 8,943.98 and 4,247.90 is: 5,857.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.94 : 8,943.98 = 4,247.90 : x
  2. Step 2: Convert to fraction form
    6,485.94/8,943.98 = 4,247.90/x
  3. Step 3: Cross multiply
    6,485.94x = 8,943.98 × 4,247.90
  4. Step 4: Simplify right side
    6,485.94x = 37,993,132.64
  5. Step 5: Solve for x
    x = 37,993,132.64/6,485.94
  6. Step 6: Final answer
    x = 5,857.77

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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.