Home / 3,899.72-5,848.88-1,125.70

Finding the Fourth Proportional to 3,899.72, 5,848.88 and 1,125.70

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Solution

The fourth proportional to 3,899.72, 5,848.88 and 1,125.70 is: 1,688.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.72 : 5,848.88 = 1,125.70 : x
  2. Step 2: Convert to fraction form
    3,899.72/5,848.88 = 1,125.70/x
  3. Step 3: Cross multiply
    3,899.72x = 5,848.88 × 1,125.70
  4. Step 4: Simplify right side
    3,899.72x = 6,584,063.97
  5. Step 5: Solve for x
    x = 6,584,063.97/3,899.72
  6. Step 6: Final answer
    x = 1,688.34

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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.