Home / 2,820.12-3,891.70-1,757.35

Finding the Fourth Proportional to 2,820.12, 3,891.70 and 1,757.35

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Solution

The fourth proportional to 2,820.12, 3,891.70 and 1,757.35 is: 2,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.12 : 3,891.70 = 1,757.35 : x
  2. Step 2: Convert to fraction form
    2,820.12/3,891.70 = 1,757.35/x
  3. Step 3: Cross multiply
    2,820.12x = 3,891.70 × 1,757.35
  4. Step 4: Simplify right side
    2,820.12x = 6,839,079.00
  5. Step 5: Solve for x
    x = 6,839,079.00/2,820.12
  6. Step 6: Final answer
    x = 2,425.10

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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.