Home / 2,780.60-4,171.10-1,137.17

Finding the Fourth Proportional to 2,780.60, 4,171.10 and 1,137.17

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Solution

The fourth proportional to 2,780.60, 4,171.10 and 1,137.17 is: 1,705.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.60 : 4,171.10 = 1,137.17 : x
  2. Step 2: Convert to fraction form
    2,780.60/4,171.10 = 1,137.17/x
  3. Step 3: Cross multiply
    2,780.60x = 4,171.10 × 1,137.17
  4. Step 4: Simplify right side
    2,780.60x = 4,743,254.53
  5. Step 5: Solve for x
    x = 4,743,254.53/2,780.60
  6. Step 6: Final answer
    x = 1,705.84

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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.