Home / 5,087.70-7,631.55-1,800.90

Finding the Fourth Proportional to 5,087.70, 7,631.55 and 1,800.90

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Solution

The fourth proportional to 5,087.70, 7,631.55 and 1,800.90 is: 2,701.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.70 : 7,631.55 = 1,800.90 : x
  2. Step 2: Convert to fraction form
    5,087.70/7,631.55 = 1,800.90/x
  3. Step 3: Cross multiply
    5,087.70x = 7,631.55 × 1,800.90
  4. Step 4: Simplify right side
    5,087.70x = 13,743,658.40
  5. Step 5: Solve for x
    x = 13,743,658.40/5,087.70
  6. Step 6: Final answer
    x = 2,701.35

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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.