Home / 5,250.28-7,876.64-1,787.56

Finding the Fourth Proportional to 5,250.28, 7,876.64 and 1,787.56

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Solution

The fourth proportional to 5,250.28, 7,876.64 and 1,787.56 is: 2,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,250.28 : 7,876.64 = 1,787.56 : x
  2. Step 2: Convert to fraction form
    5,250.28/7,876.64 = 1,787.56/x
  3. Step 3: Cross multiply
    5,250.28x = 7,876.64 × 1,787.56
  4. Step 4: Simplify right side
    5,250.28x = 14,079,966.60
  5. Step 5: Solve for x
    x = 14,079,966.60/5,250.28
  6. Step 6: Final answer
    x = 2,681.76

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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.