Home / 2,518.84-3,780.98-2,130.65

Finding the Fourth Proportional to 2,518.84, 3,780.98 and 2,130.65

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Solution

The fourth proportional to 2,518.84, 3,780.98 and 2,130.65 is: 3,198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518.84 : 3,780.98 = 2,130.65 : x
  2. Step 2: Convert to fraction form
    2,518.84/3,780.98 = 2,130.65/x
  3. Step 3: Cross multiply
    2,518.84x = 3,780.98 × 2,130.65
  4. Step 4: Simplify right side
    2,518.84x = 8,055,945.04
  5. Step 5: Solve for x
    x = 8,055,945.04/2,518.84
  6. Step 6: Final answer
    x = 3,198.28

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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.