Home / 6,289.76-9,431.04-1,905.92

Finding the Fourth Proportional to 6,289.76, 9,431.04 and 1,905.92

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Solution

The fourth proportional to 6,289.76, 9,431.04 and 1,905.92 is: 2,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289.76 : 9,431.04 = 1,905.92 : x
  2. Step 2: Convert to fraction form
    6,289.76/9,431.04 = 1,905.92/x
  3. Step 3: Cross multiply
    6,289.76x = 9,431.04 × 1,905.92
  4. Step 4: Simplify right side
    6,289.76x = 17,974,807.76
  5. Step 5: Solve for x
    x = 17,974,807.76/6,289.76
  6. Step 6: Final answer
    x = 2,857.79

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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.