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Finding the Fourth Proportional to 6,485.72, 8,966.25 and 6,426.53

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Solution

The fourth proportional to 6,485.72, 8,966.25 and 6,426.53 is: 8,884.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.72 : 8,966.25 = 6,426.53 : x
  2. Step 2: Convert to fraction form
    6,485.72/8,966.25 = 6,426.53/x
  3. Step 3: Cross multiply
    6,485.72x = 8,966.25 × 6,426.53
  4. Step 4: Simplify right side
    6,485.72x = 57,621,874.61
  5. Step 5: Solve for x
    x = 57,621,874.61/6,485.72
  6. Step 6: Final answer
    x = 8,884.42

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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.