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Finding the Fourth Proportional to 8,728.35, 12,044.77 and 4,749.47

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Solution

The fourth proportional to 8,728.35, 12,044.77 and 4,749.47 is: 6,554.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.35 : 12,044.77 = 4,749.47 : x
  2. Step 2: Convert to fraction form
    8,728.35/12,044.77 = 4,749.47/x
  3. Step 3: Cross multiply
    8,728.35x = 12,044.77 × 4,749.47
  4. Step 4: Simplify right side
    8,728.35x = 57,206,246.84
  5. Step 5: Solve for x
    x = 57,206,246.84/8,728.35
  6. Step 6: Final answer
    x = 6,554.07

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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.