Home / 2,820.04-3,891.38-1,685.48

Finding the Fourth Proportional to 2,820.04, 3,891.38 and 1,685.48

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Solution

The fourth proportional to 2,820.04, 3,891.38 and 1,685.48 is: 2,325.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.04 : 3,891.38 = 1,685.48 : x
  2. Step 2: Convert to fraction form
    2,820.04/3,891.38 = 1,685.48/x
  3. Step 3: Cross multiply
    2,820.04x = 3,891.38 × 1,685.48
  4. Step 4: Simplify right side
    2,820.04x = 6,558,843.16
  5. Step 5: Solve for x
    x = 6,558,843.16/2,820.04
  6. Step 6: Final answer
    x = 2,325.80

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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.