Home / 1,790.24-2,679.90-1,440.32

Finding the Fourth Proportional to 1,790.24, 2,679.90 and 1,440.32

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Solution

The fourth proportional to 1,790.24, 2,679.90 and 1,440.32 is: 2,156.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.24 : 2,679.90 = 1,440.32 : x
  2. Step 2: Convert to fraction form
    1,790.24/2,679.90 = 1,440.32/x
  3. Step 3: Cross multiply
    1,790.24x = 2,679.90 × 1,440.32
  4. Step 4: Simplify right side
    1,790.24x = 3,859,913.57
  5. Step 5: Solve for x
    x = 3,859,913.57/1,790.24
  6. Step 6: Final answer
    x = 2,156.09

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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.