Home / 2,181.85-3,011.01-1,237.71

Finding the Fourth Proportional to 2,181.85, 3,011.01 and 1,237.71

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Solution

The fourth proportional to 2,181.85, 3,011.01 and 1,237.71 is: 1,708.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.85 : 3,011.01 = 1,237.71 : x
  2. Step 2: Convert to fraction form
    2,181.85/3,011.01 = 1,237.71/x
  3. Step 3: Cross multiply
    2,181.85x = 3,011.01 × 1,237.71
  4. Step 4: Simplify right side
    2,181.85x = 3,726,749.22
  5. Step 5: Solve for x
    x = 3,726,749.22/2,181.85
  6. Step 6: Final answer
    x = 1,708.07

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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.