Home / 2,526.79-3,790-1,121.65

Finding the Fourth Proportional to 2,526.79, 3,790 and 1,121.65

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Solution

The fourth proportional to 2,526.79, 3,790 and 1,121.65 is: 1,682.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,526.79 : 3,790 = 1,121.65 : x
  2. Step 2: Convert to fraction form
    2,526.79/3,790 = 1,121.65/x
  3. Step 3: Cross multiply
    2,526.79x = 3,790 × 1,121.65
  4. Step 4: Simplify right side
    2,526.79x = 4,251,053.50
  5. Step 5: Solve for x
    x = 4,251,053.50/2,526.79
  6. Step 6: Final answer
    x = 1,682.39

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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.