Home / 2,287.61-3,431.65-621.77

Finding the Fourth Proportional to 2,287.61, 3,431.65 and 621.77

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Solution

The fourth proportional to 2,287.61, 3,431.65 and 621.77 is: 932.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,287.61 : 3,431.65 = 621.77 : x
  2. Step 2: Convert to fraction form
    2,287.61/3,431.65 = 621.77/x
  3. Step 3: Cross multiply
    2,287.61x = 3,431.65 × 621.77
  4. Step 4: Simplify right side
    2,287.61x = 2,133,678.31
  5. Step 5: Solve for x
    x = 2,133,678.31/2,287.61
  6. Step 6: Final answer
    x = 932.71

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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.