Home / 3,087.06-4,259.15-1,890.80

Finding the Fourth Proportional to 3,087.06, 4,259.15 and 1,890.80

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Solution

The fourth proportional to 3,087.06, 4,259.15 and 1,890.80 is: 2,608.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.06 : 4,259.15 = 1,890.80 : x
  2. Step 2: Convert to fraction form
    3,087.06/4,259.15 = 1,890.80/x
  3. Step 3: Cross multiply
    3,087.06x = 4,259.15 × 1,890.80
  4. Step 4: Simplify right side
    3,087.06x = 8,053,193.13
  5. Step 5: Solve for x
    x = 8,053,193.13/3,087.06
  6. Step 6: Final answer
    x = 2,608.70

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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.