Home / 3,087.20-4,260.32-1,689.95

Finding the Fourth Proportional to 3,087.20, 4,260.32 and 1,689.95

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Solution

The fourth proportional to 3,087.20, 4,260.32 and 1,689.95 is: 2,332.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.20 : 4,260.32 = 1,689.95 : x
  2. Step 2: Convert to fraction form
    3,087.20/4,260.32 = 1,689.95/x
  3. Step 3: Cross multiply
    3,087.20x = 4,260.32 × 1,689.95
  4. Step 4: Simplify right side
    3,087.20x = 7,199,698.03
  5. Step 5: Solve for x
    x = 7,199,698.03/3,087.20
  6. Step 6: Final answer
    x = 2,332.12

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1.5x scale

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.