Home / 4,121.52-5,685.14-2,705.30

Finding the Fourth Proportional to 4,121.52, 5,685.14 and 2,705.30

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Solution

The fourth proportional to 4,121.52, 5,685.14 and 2,705.30 is: 3,731.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.52 : 5,685.14 = 2,705.30 : x
  2. Step 2: Convert to fraction form
    4,121.52/5,685.14 = 2,705.30/x
  3. Step 3: Cross multiply
    4,121.52x = 5,685.14 × 2,705.30
  4. Step 4: Simplify right side
    4,121.52x = 15,380,009.24
  5. Step 5: Solve for x
    x = 15,380,009.24/4,121.52
  6. Step 6: Final answer
    x = 3,731.64

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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.