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Finding the Fourth Proportional to 8,652.65, 11,939.78 and 4,875.72

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Solution

The fourth proportional to 8,652.65, 11,939.78 and 4,875.72 is: 6,728.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,652.65 : 11,939.78 = 4,875.72 : x
  2. Step 2: Convert to fraction form
    8,652.65/11,939.78 = 4,875.72/x
  3. Step 3: Cross multiply
    8,652.65x = 11,939.78 × 4,875.72
  4. Step 4: Simplify right side
    8,652.65x = 58,215,024.14
  5. Step 5: Solve for x
    x = 58,215,024.14/8,652.65
  6. Step 6: Final answer
    x = 6,728.00

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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.