Home / 3,171.80-4,377.08-1,774.56

Finding the Fourth Proportional to 3,171.80, 4,377.08 and 1,774.56

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Solution

The fourth proportional to 3,171.80, 4,377.08 and 1,774.56 is: 2,448.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.80 : 4,377.08 = 1,774.56 : x
  2. Step 2: Convert to fraction form
    3,171.80/4,377.08 = 1,774.56/x
  3. Step 3: Cross multiply
    3,171.80x = 4,377.08 × 1,774.56
  4. Step 4: Simplify right side
    3,171.80x = 7,767,391.08
  5. Step 5: Solve for x
    x = 7,767,391.08/3,171.80
  6. Step 6: Final answer
    x = 2,448.89

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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.