Home / 1,385.21-1,913.41-1,027.02

Finding the Fourth Proportional to 1,385.21, 1,913.41 and 1,027.02

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Solution

The fourth proportional to 1,385.21, 1,913.41 and 1,027.02 is: 1,418.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.21 : 1,913.41 = 1,027.02 : x
  2. Step 2: Convert to fraction form
    1,385.21/1,913.41 = 1,027.02/x
  3. Step 3: Cross multiply
    1,385.21x = 1,913.41 × 1,027.02
  4. Step 4: Simplify right side
    1,385.21x = 1,965,109.43
  5. Step 5: Solve for x
    x = 1,965,109.43/1,385.21
  6. Step 6: Final answer
    x = 1,418.64

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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.