Home / 3,087.19-4,260.29-1,670.87

Finding the Fourth Proportional to 3,087.19, 4,260.29 and 1,670.87

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Solution

The fourth proportional to 3,087.19, 4,260.29 and 1,670.87 is: 2,305.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.19 : 4,260.29 = 1,670.87 : x
  2. Step 2: Convert to fraction form
    3,087.19/4,260.29 = 1,670.87/x
  3. Step 3: Cross multiply
    3,087.19x = 4,260.29 × 1,670.87
  4. Step 4: Simplify right side
    3,087.19x = 7,118,382.40
  5. Step 5: Solve for x
    x = 7,118,382.40/3,087.19
  6. Step 6: Final answer
    x = 2,305.78

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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.