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Finding the Fourth Proportional to 8,333.53, 12,485.89 and 4,378.91

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Solution

The fourth proportional to 8,333.53, 12,485.89 and 4,378.91 is: 6,560.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,333.53 : 12,485.89 = 4,378.91 : x
  2. Step 2: Convert to fraction form
    8,333.53/12,485.89 = 4,378.91/x
  3. Step 3: Cross multiply
    8,333.53x = 12,485.89 × 4,378.91
  4. Step 4: Simplify right side
    8,333.53x = 54,674,504.26
  5. Step 5: Solve for x
    x = 54,674,504.26/8,333.53
  6. Step 6: Final answer
    x = 6,560.79

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1.5x scale

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.