Home / 1,548.45-2,320.38-1,421.17

Finding the Fourth Proportional to 1,548.45, 2,320.38 and 1,421.17

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Solution

The fourth proportional to 1,548.45, 2,320.38 and 1,421.17 is: 2,129.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,548.45 : 2,320.38 = 1,421.17 : x
  2. Step 2: Convert to fraction form
    1,548.45/2,320.38 = 1,421.17/x
  3. Step 3: Cross multiply
    1,548.45x = 2,320.38 × 1,421.17
  4. Step 4: Simplify right side
    1,548.45x = 3,297,654.44
  5. Step 5: Solve for x
    x = 3,297,654.44/1,548.45
  6. Step 6: Final answer
    x = 2,129.65

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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.