Home / 3,977.66-5,488.91-2,485.50

Finding the Fourth Proportional to 3,977.66, 5,488.91 and 2,485.50

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Solution

The fourth proportional to 3,977.66, 5,488.91 and 2,485.50 is: 3,429.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.66 : 5,488.91 = 2,485.50 : x
  2. Step 2: Convert to fraction form
    3,977.66/5,488.91 = 2,485.50/x
  3. Step 3: Cross multiply
    3,977.66x = 5,488.91 × 2,485.50
  4. Step 4: Simplify right side
    3,977.66x = 13,642,685.81
  5. Step 5: Solve for x
    x = 13,642,685.81/3,977.66
  6. Step 6: Final answer
    x = 3,429.83

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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.