Home / 1,377.58-2,066.39-403.70

Finding the Fourth Proportional to 1,377.58, 2,066.39 and 403.70

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Solution

The fourth proportional to 1,377.58, 2,066.39 and 403.70 is: 605.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.58 : 2,066.39 = 403.70 : x
  2. Step 2: Convert to fraction form
    1,377.58/2,066.39 = 403.70/x
  3. Step 3: Cross multiply
    1,377.58x = 2,066.39 × 403.70
  4. Step 4: Simplify right side
    1,377.58x = 834,199.62
  5. Step 5: Solve for x
    x = 834,199.62/1,377.58
  6. Step 6: Final answer
    x = 605.55

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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.