Home / 2,774.87-3,830.40-1,891.16

Finding the Fourth Proportional to 2,774.87, 3,830.40 and 1,891.16

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Solution

The fourth proportional to 2,774.87, 3,830.40 and 1,891.16 is: 2,610.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.87 : 3,830.40 = 1,891.16 : x
  2. Step 2: Convert to fraction form
    2,774.87/3,830.40 = 1,891.16/x
  3. Step 3: Cross multiply
    2,774.87x = 3,830.40 × 1,891.16
  4. Step 4: Simplify right side
    2,774.87x = 7,243,880.11
  5. Step 5: Solve for x
    x = 7,243,880.11/2,774.87
  6. Step 6: Final answer
    x = 2,610.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.