Home / 2,181.60-3,011.58-1,297.71

Finding the Fourth Proportional to 2,181.60, 3,011.58 and 1,297.71

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Solution

The fourth proportional to 2,181.60, 3,011.58 and 1,297.71 is: 1,791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.60 : 3,011.58 = 1,297.71 : x
  2. Step 2: Convert to fraction form
    2,181.60/3,011.58 = 1,297.71/x
  3. Step 3: Cross multiply
    2,181.60x = 3,011.58 × 1,297.71
  4. Step 4: Simplify right side
    2,181.60x = 3,908,157.48
  5. Step 5: Solve for x
    x = 3,908,157.48/2,181.60
  6. Step 6: Final answer
    x = 1,791.42

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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.