Home / 1,421.05-1,950.53-1,260.17

Finding the Fourth Proportional to 1,421.05, 1,950.53 and 1,260.17

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Solution

The fourth proportional to 1,421.05, 1,950.53 and 1,260.17 is: 1,729.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.05 : 1,950.53 = 1,260.17 : x
  2. Step 2: Convert to fraction form
    1,421.05/1,950.53 = 1,260.17/x
  3. Step 3: Cross multiply
    1,421.05x = 1,950.53 × 1,260.17
  4. Step 4: Simplify right side
    1,421.05x = 2,458,007.42
  5. Step 5: Solve for x
    x = 2,458,007.42/1,421.05
  6. Step 6: Final answer
    x = 1,729.72

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.