Home / 3,748.49-5,173.08-2,155.65

Finding the Fourth Proportional to 3,748.49, 5,173.08 and 2,155.65

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Solution

The fourth proportional to 3,748.49, 5,173.08 and 2,155.65 is: 2,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,748.49 : 5,173.08 = 2,155.65 : x
  2. Step 2: Convert to fraction form
    3,748.49/5,173.08 = 2,155.65/x
  3. Step 3: Cross multiply
    3,748.49x = 5,173.08 × 2,155.65
  4. Step 4: Simplify right side
    3,748.49x = 11,151,349.90
  5. Step 5: Solve for x
    x = 11,151,349.90/3,748.49
  6. Step 6: Final answer
    x = 2,974.90

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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.