Home / 1,377.39-2,066.55-403.64

Finding the Fourth Proportional to 1,377.39, 2,066.55 and 403.64

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Solution

The fourth proportional to 1,377.39, 2,066.55 and 403.64 is: 605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.39 : 2,066.55 = 403.64 : x
  2. Step 2: Convert to fraction form
    1,377.39/2,066.55 = 403.64/x
  3. Step 3: Cross multiply
    1,377.39x = 2,066.55 × 403.64
  4. Step 4: Simplify right side
    1,377.39x = 834,131.91
  5. Step 5: Solve for x
    x = 834,131.91/1,377.39
  6. Step 6: Final answer
    x = 605.59

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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.