Home / 2,720.42-3,755.99-2,089.82

Finding the Fourth Proportional to 2,720.42, 3,755.99 and 2,089.82

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Solution

The fourth proportional to 2,720.42, 3,755.99 and 2,089.82 is: 2,885.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.42 : 3,755.99 = 2,089.82 : x
  2. Step 2: Convert to fraction form
    2,720.42/3,755.99 = 2,089.82/x
  3. Step 3: Cross multiply
    2,720.42x = 3,755.99 × 2,089.82
  4. Step 4: Simplify right side
    2,720.42x = 7,849,343.02
  5. Step 5: Solve for x
    x = 7,849,343.02/2,720.42
  6. Step 6: Final answer
    x = 2,885.34

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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.