Home / 5,571.55-7,689.78-3,181.51

Finding the Fourth Proportional to 5,571.55, 7,689.78 and 3,181.51

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Solution

The fourth proportional to 5,571.55, 7,689.78 and 3,181.51 is: 4,391.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,571.55 : 7,689.78 = 3,181.51 : x
  2. Step 2: Convert to fraction form
    5,571.55/7,689.78 = 3,181.51/x
  3. Step 3: Cross multiply
    5,571.55x = 7,689.78 × 3,181.51
  4. Step 4: Simplify right side
    5,571.55x = 24,465,111.97
  5. Step 5: Solve for x
    x = 24,465,111.97/5,571.55
  6. Step 6: Final answer
    x = 4,391.08

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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.