Home / 3,718.30-5,130.71-2,321.05

Finding the Fourth Proportional to 3,718.30, 5,130.71 and 2,321.05

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Solution

The fourth proportional to 3,718.30, 5,130.71 and 2,321.05 is: 3,202.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.30 : 5,130.71 = 2,321.05 : x
  2. Step 2: Convert to fraction form
    3,718.30/5,130.71 = 2,321.05/x
  3. Step 3: Cross multiply
    3,718.30x = 5,130.71 × 2,321.05
  4. Step 4: Simplify right side
    3,718.30x = 11,908,608.79
  5. Step 5: Solve for x
    x = 11,908,608.79/3,718.30
  6. Step 6: Final answer
    x = 3,202.71

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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.