Home / 3,087.34-4,260.44-1,690

Finding the Fourth Proportional to 3,087.34, 4,260.44 and 1,690

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Solution

The fourth proportional to 3,087.34, 4,260.44 and 1,690 is: 2,332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.34 : 4,260.44 = 1,690 : x
  2. Step 2: Convert to fraction form
    3,087.34/4,260.44 = 1,690/x
  3. Step 3: Cross multiply
    3,087.34x = 4,260.44 × 1,690
  4. Step 4: Simplify right side
    3,087.34x = 7,200,143.60
  5. Step 5: Solve for x
    x = 7,200,143.60/3,087.34
  6. Step 6: Final answer
    x = 2,332.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.