Home / 1,372.21-2,059.10-581.50

Finding the Fourth Proportional to 1,372.21, 2,059.10 and 581.50

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Solution

The fourth proportional to 1,372.21, 2,059.10 and 581.50 is: 872.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.21 : 2,059.10 = 581.50 : x
  2. Step 2: Convert to fraction form
    1,372.21/2,059.10 = 581.50/x
  3. Step 3: Cross multiply
    1,372.21x = 2,059.10 × 581.50
  4. Step 4: Simplify right side
    1,372.21x = 1,197,366.65
  5. Step 5: Solve for x
    x = 1,197,366.65/1,372.21
  6. Step 6: Final answer
    x = 872.58

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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.