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Finding the Fourth Proportional to 8,509.91, 12,752.37 and 4,287.38

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Solution

The fourth proportional to 8,509.91, 12,752.37 and 4,287.38 is: 6,424.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,509.91 : 12,752.37 = 4,287.38 : x
  2. Step 2: Convert to fraction form
    8,509.91/12,752.37 = 4,287.38/x
  3. Step 3: Cross multiply
    8,509.91x = 12,752.37 × 4,287.38
  4. Step 4: Simplify right side
    8,509.91x = 54,674,192.33
  5. Step 5: Solve for x
    x = 54,674,192.33/8,509.91
  6. Step 6: Final answer
    x = 6,424.77

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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.