Home / 1,427.02-2,137.29-1,282.84

Finding the Fourth Proportional to 1,427.02, 2,137.29 and 1,282.84

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Solution

The fourth proportional to 1,427.02, 2,137.29 and 1,282.84 is: 1,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.02 : 2,137.29 = 1,282.84 : x
  2. Step 2: Convert to fraction form
    1,427.02/2,137.29 = 1,282.84/x
  3. Step 3: Cross multiply
    1,427.02x = 2,137.29 × 1,282.84
  4. Step 4: Simplify right side
    1,427.02x = 2,741,801.10
  5. Step 5: Solve for x
    x = 2,741,801.10/1,427.02
  6. Step 6: Final answer
    x = 1,921.35

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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.