Home / 3,718.42-5,575.47-1,986.10

Finding the Fourth Proportional to 3,718.42, 5,575.47 and 1,986.10

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Solution

The fourth proportional to 3,718.42, 5,575.47 and 1,986.10 is: 2,978.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.42 : 5,575.47 = 1,986.10 : x
  2. Step 2: Convert to fraction form
    3,718.42/5,575.47 = 1,986.10/x
  3. Step 3: Cross multiply
    3,718.42x = 5,575.47 × 1,986.10
  4. Step 4: Simplify right side
    3,718.42x = 11,073,440.97
  5. Step 5: Solve for x
    x = 11,073,440.97/3,718.42
  6. Step 6: Final answer
    x = 2,978.00

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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.