Home / 5,087.49-7,630.44-1,390.02

Finding the Fourth Proportional to 5,087.49, 7,630.44 and 1,390.02

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Solution

The fourth proportional to 5,087.49, 7,630.44 and 1,390.02 is: 2,084.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.49 : 7,630.44 = 1,390.02 : x
  2. Step 2: Convert to fraction form
    5,087.49/7,630.44 = 1,390.02/x
  3. Step 3: Cross multiply
    5,087.49x = 7,630.44 × 1,390.02
  4. Step 4: Simplify right side
    5,087.49x = 10,606,464.21
  5. Step 5: Solve for x
    x = 10,606,464.21/5,087.49
  6. Step 6: Final answer
    x = 2,084.81

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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.