Home / 8,787.09-13,182.40-3,240.46

Finding the Fourth Proportional to 8,787.09, 13,182.40 and 3,240.46

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Solution

The fourth proportional to 8,787.09, 13,182.40 and 3,240.46 is: 4,861.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.09 : 13,182.40 = 3,240.46 : x
  2. Step 2: Convert to fraction form
    8,787.09/13,182.40 = 3,240.46/x
  3. Step 3: Cross multiply
    8,787.09x = 13,182.40 × 3,240.46
  4. Step 4: Simplify right side
    8,787.09x = 42,717,039.90
  5. Step 5: Solve for x
    x = 42,717,039.90/8,787.09
  6. Step 6: Final answer
    x = 4,861.34

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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.