Home / 3,101.96-4,280.62-1,685.58

Finding the Fourth Proportional to 3,101.96, 4,280.62 and 1,685.58

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Solution

The fourth proportional to 3,101.96, 4,280.62 and 1,685.58 is: 2,326.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.96 : 4,280.62 = 1,685.58 : x
  2. Step 2: Convert to fraction form
    3,101.96/4,280.62 = 1,685.58/x
  3. Step 3: Cross multiply
    3,101.96x = 4,280.62 × 1,685.58
  4. Step 4: Simplify right side
    3,101.96x = 7,215,327.46
  5. Step 5: Solve for x
    x = 7,215,327.46/3,101.96
  6. Step 6: Final answer
    x = 2,326.05

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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.