Home / 8,787.12-13,181.40-2,943.72

Finding the Fourth Proportional to 8,787.12, 13,181.40 and 2,943.72

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Solution

The fourth proportional to 8,787.12, 13,181.40 and 2,943.72 is: 4,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.12 : 13,181.40 = 2,943.72 : x
  2. Step 2: Convert to fraction form
    8,787.12/13,181.40 = 2,943.72/x
  3. Step 3: Cross multiply
    8,787.12x = 13,181.40 × 2,943.72
  4. Step 4: Simplify right side
    8,787.12x = 38,802,350.81
  5. Step 5: Solve for x
    x = 38,802,350.81/8,787.12
  6. Step 6: Final answer
    x = 4,415.82

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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.