Home / 3,087.90-4,261.26-1,671.56

Finding the Fourth Proportional to 3,087.90, 4,261.26 and 1,671.56

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Solution

The fourth proportional to 3,087.90, 4,261.26 and 1,671.56 is: 2,306.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.90 : 4,261.26 = 1,671.56 : x
  2. Step 2: Convert to fraction form
    3,087.90/4,261.26 = 1,671.56/x
  3. Step 3: Cross multiply
    3,087.90x = 4,261.26 × 1,671.56
  4. Step 4: Simplify right side
    3,087.90x = 7,122,930.46
  5. Step 5: Solve for x
    x = 7,122,930.46/3,087.90
  6. Step 6: Final answer
    x = 2,306.72

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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.