Home / 3,087.01-4,260.20-1,689.76

Finding the Fourth Proportional to 3,087.01, 4,260.20 and 1,689.76

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Solution

The fourth proportional to 3,087.01, 4,260.20 and 1,689.76 is: 2,331.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.01 : 4,260.20 = 1,689.76 : x
  2. Step 2: Convert to fraction form
    3,087.01/4,260.20 = 1,689.76/x
  3. Step 3: Cross multiply
    3,087.01x = 4,260.20 × 1,689.76
  4. Step 4: Simplify right side
    3,087.01x = 7,198,707.10
  5. Step 5: Solve for x
    x = 7,198,707.10/3,087.01
  6. Step 6: Final answer
    x = 2,331.94

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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.