Home / 8,787.78-13,179.69-2,547.81

Finding the Fourth Proportional to 8,787.78, 13,179.69 and 2,547.81

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Solution

The fourth proportional to 8,787.78, 13,179.69 and 2,547.81 is: 3,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.78 : 13,179.69 = 2,547.81 : x
  2. Step 2: Convert to fraction form
    8,787.78/13,179.69 = 2,547.81/x
  3. Step 3: Cross multiply
    8,787.78x = 13,179.69 × 2,547.81
  4. Step 4: Simplify right side
    8,787.78x = 33,579,345.98
  5. Step 5: Solve for x
    x = 33,579,345.98/8,787.78
  6. Step 6: Final answer
    x = 3,821.14

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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.