Home / 4,278.80-6,419.06-2,087.57

Finding the Fourth Proportional to 4,278.80, 6,419.06 and 2,087.57

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Solution

The fourth proportional to 4,278.80, 6,419.06 and 2,087.57 is: 3,131.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.80 : 6,419.06 = 2,087.57 : x
  2. Step 2: Convert to fraction form
    4,278.80/6,419.06 = 2,087.57/x
  3. Step 3: Cross multiply
    4,278.80x = 6,419.06 × 2,087.57
  4. Step 4: Simplify right side
    4,278.80x = 13,400,194.55
  5. Step 5: Solve for x
    x = 13,400,194.55/4,278.80
  6. Step 6: Final answer
    x = 3,131.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.