Home / 1,719.72-2,372.53-1,122.91

Finding the Fourth Proportional to 1,719.72, 2,372.53 and 1,122.91

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Solution

The fourth proportional to 1,719.72, 2,372.53 and 1,122.91 is: 1,549.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.72 : 2,372.53 = 1,122.91 : x
  2. Step 2: Convert to fraction form
    1,719.72/2,372.53 = 1,122.91/x
  3. Step 3: Cross multiply
    1,719.72x = 2,372.53 × 1,122.91
  4. Step 4: Simplify right side
    1,719.72x = 2,664,137.66
  5. Step 5: Solve for x
    x = 2,664,137.66/1,719.72
  6. Step 6: Final answer
    x = 1,549.17

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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.