Home / 1,810.44-2,499.81-1,390.11

Finding the Fourth Proportional to 1,810.44, 2,499.81 and 1,390.11

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Solution

The fourth proportional to 1,810.44, 2,499.81 and 1,390.11 is: 1,919.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,810.44 : 2,499.81 = 1,390.11 : x
  2. Step 2: Convert to fraction form
    1,810.44/2,499.81 = 1,390.11/x
  3. Step 3: Cross multiply
    1,810.44x = 2,499.81 × 1,390.11
  4. Step 4: Simplify right side
    1,810.44x = 3,475,010.88
  5. Step 5: Solve for x
    x = 3,475,010.88/1,810.44
  6. Step 6: Final answer
    x = 1,919.43

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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.