Home / 2,427.72-3,643.74-1,129.92

Finding the Fourth Proportional to 2,427.72, 3,643.74 and 1,129.92

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Solution

The fourth proportional to 2,427.72, 3,643.74 and 1,129.92 is: 1,695.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,427.72 : 3,643.74 = 1,129.92 : x
  2. Step 2: Convert to fraction form
    2,427.72/3,643.74 = 1,129.92/x
  3. Step 3: Cross multiply
    2,427.72x = 3,643.74 × 1,129.92
  4. Step 4: Simplify right side
    2,427.72x = 4,117,134.70
  5. Step 5: Solve for x
    x = 4,117,134.70/2,427.72
  6. Step 6: Final answer
    x = 1,695.89

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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.