Home / 1,372.30-2,056.55-1,189.24

Finding the Fourth Proportional to 1,372.30, 2,056.55 and 1,189.24

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Solution

The fourth proportional to 1,372.30, 2,056.55 and 1,189.24 is: 1,782.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.30 : 2,056.55 = 1,189.24 : x
  2. Step 2: Convert to fraction form
    1,372.30/2,056.55 = 1,189.24/x
  3. Step 3: Cross multiply
    1,372.30x = 2,056.55 × 1,189.24
  4. Step 4: Simplify right side
    1,372.30x = 2,445,715.29
  5. Step 5: Solve for x
    x = 2,445,715.29/1,372.30
  6. Step 6: Final answer
    x = 1,782.21

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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.