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Finding the Fourth Proportional to 8,505.64, 12,741.18 and 4,393

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Solution

The fourth proportional to 8,505.64, 12,741.18 and 4,393 is: 6,580.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.64 : 12,741.18 = 4,393 : x
  2. Step 2: Convert to fraction form
    8,505.64/12,741.18 = 4,393/x
  3. Step 3: Cross multiply
    8,505.64x = 12,741.18 × 4,393
  4. Step 4: Simplify right side
    8,505.64x = 55,972,003.74
  5. Step 5: Solve for x
    x = 55,972,003.74/8,505.64
  6. Step 6: Final answer
    x = 6,580.58

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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.