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Finding the Fourth Proportional to 8,927.70, 13,389.15 and 2,687.70

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Solution

The fourth proportional to 8,927.70, 13,389.15 and 2,687.70 is: 4,030.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.70 : 13,389.15 = 2,687.70 : x
  2. Step 2: Convert to fraction form
    8,927.70/13,389.15 = 2,687.70/x
  3. Step 3: Cross multiply
    8,927.70x = 13,389.15 × 2,687.70
  4. Step 4: Simplify right side
    8,927.70x = 35,986,018.46
  5. Step 5: Solve for x
    x = 35,986,018.46/8,927.70
  6. Step 6: Final answer
    x = 4,030.83

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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.