Home / 1,921.24-2,881.90-1,437.80

Finding the Fourth Proportional to 1,921.24, 2,881.90 and 1,437.80

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Solution

The fourth proportional to 1,921.24, 2,881.90 and 1,437.80 is: 2,156.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.24 : 2,881.90 = 1,437.80 : x
  2. Step 2: Convert to fraction form
    1,921.24/2,881.90 = 1,437.80/x
  3. Step 3: Cross multiply
    1,921.24x = 2,881.90 × 1,437.80
  4. Step 4: Simplify right side
    1,921.24x = 4,143,595.82
  5. Step 5: Solve for x
    x = 4,143,595.82/1,921.24
  6. Step 6: Final answer
    x = 2,156.73

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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.