Home / 5,947.79-8,921.68-1,787.78

Finding the Fourth Proportional to 5,947.79, 8,921.68 and 1,787.78

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Solution

The fourth proportional to 5,947.79, 8,921.68 and 1,787.78 is: 2,681.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,947.79 : 8,921.68 = 1,787.78 : x
  2. Step 2: Convert to fraction form
    5,947.79/8,921.68 = 1,787.78/x
  3. Step 3: Cross multiply
    5,947.79x = 8,921.68 × 1,787.78
  4. Step 4: Simplify right side
    5,947.79x = 15,950,018.91
  5. Step 5: Solve for x
    x = 15,950,018.91/5,947.79
  6. Step 6: Final answer
    x = 2,681.67

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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.