Home / 2,520.14-3,780.20-671.25

Finding the Fourth Proportional to 2,520.14, 3,780.20 and 671.25

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Solution

The fourth proportional to 2,520.14, 3,780.20 and 671.25 is: 1,006.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.14 : 3,780.20 = 671.25 : x
  2. Step 2: Convert to fraction form
    2,520.14/3,780.20 = 671.25/x
  3. Step 3: Cross multiply
    2,520.14x = 3,780.20 × 671.25
  4. Step 4: Simplify right side
    2,520.14x = 2,537,459.25
  5. Step 5: Solve for x
    x = 2,537,459.25/2,520.14
  6. Step 6: Final answer
    x = 1,006.87

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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.