Home / 10,639.92-15,960-2,848.56

Finding the Fourth Proportional to 10,639.92, 15,960 and 2,848.56

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Solution

The fourth proportional to 10,639.92, 15,960 and 2,848.56 is: 4,272.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.92 : 15,960 = 2,848.56 : x
  2. Step 2: Convert to fraction form
    10,639.92/15,960 = 2,848.56/x
  3. Step 3: Cross multiply
    10,639.92x = 15,960 × 2,848.56
  4. Step 4: Simplify right side
    10,639.92x = 45,463,017.60
  5. Step 5: Solve for x
    x = 45,463,017.60/10,639.92
  6. Step 6: Final answer
    x = 4,272.87

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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.