Home / 1,529.12-2,103.12-1,425.44

Finding the Fourth Proportional to 1,529.12, 2,103.12 and 1,425.44

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Solution

The fourth proportional to 1,529.12, 2,103.12 and 1,425.44 is: 1,960.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.12 : 2,103.12 = 1,425.44 : x
  2. Step 2: Convert to fraction form
    1,529.12/2,103.12 = 1,425.44/x
  3. Step 3: Cross multiply
    1,529.12x = 2,103.12 × 1,425.44
  4. Step 4: Simplify right side
    1,529.12x = 2,997,871.37
  5. Step 5: Solve for x
    x = 2,997,871.37/1,529.12
  6. Step 6: Final answer
    x = 1,960.52

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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.