Home / 1,269.07-1,900.85-1,238.09

Finding the Fourth Proportional to 1,269.07, 1,900.85 and 1,238.09

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Solution

The fourth proportional to 1,269.07, 1,900.85 and 1,238.09 is: 1,854.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269.07 : 1,900.85 = 1,238.09 : x
  2. Step 2: Convert to fraction form
    1,269.07/1,900.85 = 1,238.09/x
  3. Step 3: Cross multiply
    1,269.07x = 1,900.85 × 1,238.09
  4. Step 4: Simplify right side
    1,269.07x = 2,353,417.19
  5. Step 5: Solve for x
    x = 2,353,417.19/1,269.07
  6. Step 6: Final answer
    x = 1,854.45

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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.