Home / 3,859.10-5,780.55-2,125.70

Finding the Fourth Proportional to 3,859.10, 5,780.55 and 2,125.70

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Solution

The fourth proportional to 3,859.10, 5,780.55 and 2,125.70 is: 3,184.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.10 : 5,780.55 = 2,125.70 : x
  2. Step 2: Convert to fraction form
    3,859.10/5,780.55 = 2,125.70/x
  3. Step 3: Cross multiply
    3,859.10x = 5,780.55 × 2,125.70
  4. Step 4: Simplify right side
    3,859.10x = 12,287,715.14
  5. Step 5: Solve for x
    x = 12,287,715.14/3,859.10
  6. Step 6: Final answer
    x = 3,184.09

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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.