Home / 3,712.65-5,569.94-1,115.61

Finding the Fourth Proportional to 3,712.65, 5,569.94 and 1,115.61

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Solution

The fourth proportional to 3,712.65, 5,569.94 and 1,115.61 is: 1,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.65 : 5,569.94 = 1,115.61 : x
  2. Step 2: Convert to fraction form
    3,712.65/5,569.94 = 1,115.61/x
  3. Step 3: Cross multiply
    3,712.65x = 5,569.94 × 1,115.61
  4. Step 4: Simplify right side
    3,712.65x = 6,213,880.76
  5. Step 5: Solve for x
    x = 6,213,880.76/3,712.65
  6. Step 6: Final answer
    x = 1,673.70

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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.