Home / 3,087.16-4,260.26-1,689.90

Finding the Fourth Proportional to 3,087.16, 4,260.26 and 1,689.90

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Solution

The fourth proportional to 3,087.16, 4,260.26 and 1,689.90 is: 2,332.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.16 : 4,260.26 = 1,689.90 : x
  2. Step 2: Convert to fraction form
    3,087.16/4,260.26 = 1,689.90/x
  3. Step 3: Cross multiply
    3,087.16x = 4,260.26 × 1,689.90
  4. Step 4: Simplify right side
    3,087.16x = 7,199,413.37
  5. Step 5: Solve for x
    x = 7,199,413.37/3,087.16
  6. Step 6: Final answer
    x = 2,332.05

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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.