Home / 3,969.61-5,475.58-2,555.14

Finding the Fourth Proportional to 3,969.61, 5,475.58 and 2,555.14

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Solution

The fourth proportional to 3,969.61, 5,475.58 and 2,555.14 is: 3,524.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.61 : 5,475.58 = 2,555.14 : x
  2. Step 2: Convert to fraction form
    3,969.61/5,475.58 = 2,555.14/x
  3. Step 3: Cross multiply
    3,969.61x = 5,475.58 × 2,555.14
  4. Step 4: Simplify right side
    3,969.61x = 13,990,853.40
  5. Step 5: Solve for x
    x = 13,990,853.40/3,969.61
  6. Step 6: Final answer
    x = 3,524.49

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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.