Home / 1,403.64-2,105.87-581.49

Finding the Fourth Proportional to 1,403.64, 2,105.87 and 581.49

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Solution

The fourth proportional to 1,403.64, 2,105.87 and 581.49 is: 872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.64 : 2,105.87 = 581.49 : x
  2. Step 2: Convert to fraction form
    1,403.64/2,105.87 = 581.49/x
  3. Step 3: Cross multiply
    1,403.64x = 2,105.87 × 581.49
  4. Step 4: Simplify right side
    1,403.64x = 1,224,539.44
  5. Step 5: Solve for x
    x = 1,224,539.44/1,403.64
  6. Step 6: Final answer
    x = 872.40

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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.