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Finding the Fourth Proportional to 8,513.72, 11,747.88 and 4,736.40

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Solution

The fourth proportional to 8,513.72, 11,747.88 and 4,736.40 is: 6,535.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,513.72 : 11,747.88 = 4,736.40 : x
  2. Step 2: Convert to fraction form
    8,513.72/11,747.88 = 4,736.40/x
  3. Step 3: Cross multiply
    8,513.72x = 11,747.88 × 4,736.40
  4. Step 4: Simplify right side
    8,513.72x = 55,642,658.83
  5. Step 5: Solve for x
    x = 55,642,658.83/8,513.72
  6. Step 6: Final answer
    x = 6,535.65

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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.