Home / 3,617.72-5,427.23-1,279.08

Finding the Fourth Proportional to 3,617.72, 5,427.23 and 1,279.08

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Solution

The fourth proportional to 3,617.72, 5,427.23 and 1,279.08 is: 1,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.72 : 5,427.23 = 1,279.08 : x
  2. Step 2: Convert to fraction form
    3,617.72/5,427.23 = 1,279.08/x
  3. Step 3: Cross multiply
    3,617.72x = 5,427.23 × 1,279.08
  4. Step 4: Simplify right side
    3,617.72x = 6,941,870.11
  5. Step 5: Solve for x
    x = 6,941,870.11/3,617.72
  6. Step 6: Final answer
    x = 1,918.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.