Home / 2,117.81-3,177.63-1,252.13

Finding the Fourth Proportional to 2,117.81, 3,177.63 and 1,252.13

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Solution

The fourth proportional to 2,117.81, 3,177.63 and 1,252.13 is: 1,878.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.81 : 3,177.63 = 1,252.13 : x
  2. Step 2: Convert to fraction form
    2,117.81/3,177.63 = 1,252.13/x
  3. Step 3: Cross multiply
    2,117.81x = 3,177.63 × 1,252.13
  4. Step 4: Simplify right side
    2,117.81x = 3,978,789.96
  5. Step 5: Solve for x
    x = 3,978,789.96/2,117.81
  6. Step 6: Final answer
    x = 1,878.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.