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Finding the Fourth Proportional to 8,333.70, 12,501.20 and 2,787.07

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Solution

The fourth proportional to 8,333.70, 12,501.20 and 2,787.07 is: 4,180.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,333.70 : 12,501.20 = 2,787.07 : x
  2. Step 2: Convert to fraction form
    8,333.70/12,501.20 = 2,787.07/x
  3. Step 3: Cross multiply
    8,333.70x = 12,501.20 × 2,787.07
  4. Step 4: Simplify right side
    8,333.70x = 34,841,719.48
  5. Step 5: Solve for x
    x = 34,841,719.48/8,333.70
  6. Step 6: Final answer
    x = 4,180.82

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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.